20,25,15 and x are in proportion, find the value of x Share with your friends Share 2 Varun.Rawat answered this We know that,if a, b, c and d are in proportion, then a : b : : c : dor ab = cdSince, 20, 25, 15 and x are in proportion, then 20 : 25 : : 15 : x⇒2025 = 15x⇒20x = 375⇒x = 37520 = 754 -3 View Full Answer L.n.s.aniruddha answered this 10 1 Atharva Sardesai answered this Therfore 20/25=15/x 20/25*1/15=1/x 4/75=1/x therefore x=75/4 0 Harshita Dubey answered this 20 1 Rohan Var answered this I DONT KNOW 0 Talib Kausar Faridy answered this Dear friend, Please follow these steps to get your answer:- 20:25:15:x 20:25 = 4:5 15/x = 4/5 x = 4/5*15 x = 12 -3