please help with my math :)

Answer:
[tex]33,3[/tex]
Step-by-step explanation:
Set it up as a proportion in correspondence with their unit of measurement:
[tex]\frac{16}{21,3} = \frac{25}{?} → \frac{[21,3][25]}{16} → \frac{532,5}{16} = 33,28125 \\ \\ 33,3 ≈ P[/tex]
I hope this is correct, and as always, I am joyous to assist anyone at any time.