FIG. 1 is a first image of a first embodiment of a display screen with a transitional graphical user interface showing my new design;
FIG. 2 is a second image thereof;
FIG. 3 is a third image thereof;
FIG. 4 is a fourth image thereof;
FIG. 5 is a fifth image thereof;
FIG. 6 is a sixth image thereof;
FIG. 7 is a first image of a second embodiment of a display screen with a transitional graphical user interface showing my new design;
FIG. 8 is a second image thereof;
FIG. 9 is a third image thereof;
FIG. 10 is a fourth image thereof;
FIG. 11 is a fifth image thereof;
FIG. 12 is a sixth image thereof;
FIG. 13 is a first image of a third embodiment of a display screen with a transitional graphical user interface showing my new design;
FIG. 14 is a second image thereof;
FIG. 15 is a third image thereof;
FIG. 16 is a fourth image thereof;
FIG. 17 is a fifth image thereof;
FIG. 18 is a sixth image thereof;
FIG. 19 is a first image of a fourth embodiment of a display screen with a transitional graphical user interface showing my new design;
FIG. 20 is a second image thereof;
FIG. 21 is a third image thereof;
FIG. 22 is a fourth image thereof;
FIG. 23 is a fifth image thereof; and,
FIG. 24 is a sixth image thereof.
In the first embodiment, the appearance of the transitional graphical user interface sequentially transitions between the images shown in FIGS. 1-6. In the second embodiment, the appearance of the transitional graphical user interface sequentially transitions between the images shown in FIGS. 7-12. In the third embodiment, the appearance of the transitional graphical user interface sequentially transitions between the images shown in FIGS. 13-18. In the fourth embodiment, the appearance of the transitional graphical user interface sequentially transitions between the images shown in FIGS. 19-24. In each of the first, second, third and fourth embodiments, the process or period in which one image transitions to another image forms no part of the claimed design. The broken line showing of the text and the remainder of the graphical user interface and display screen is for environmental purposes only and forms no part of the claimed design.