Question

PLS HELP SUPER EASY

Solve for the variable in the following proportion.
4 is to 5 as 10 is to a


12
12.5
20

Answer 1

x=12.5

Explanation:

4/5=10/x

cross product

5*10=4*x

50=4x

x=50/4

simplify,

x=25/2

x=12.5

Answer 2

The value of variable a is 12.5.

Explanation:

4 is to 5 as 10 is to a.

or, 4 : 5 = 10 : a

By the RATIO OF PROPORTIONALITY:

`(4)/(5)  = (10)/(a) \\\implies a = (10* 5)/(4)   = 12.5`

or, the value of a = 12. 5

⇒ 4 is to 5 as 10 is to 12.5

Hence, the value of variable a is 12.5.