Question

4. Find the value of x in the given proportion: x : 21 = 15 : 45​

Answer 1

Answer:

x/21=15/45

X/21 = 1/3

X = 1/3×21

X =7

Answer 2

Answer:

Step-by-step explanation:

The proportion is x:21 = 15:45

We all know that ration means divide:

x = 15

21   45

We all here have to do is cross multiplication.

x X 45 = 21 X 15

x X 45 = 945

x = 945

      45

x= 21