Question

the
fourth
proportion
to
- What is
15, 12, 20​

Answer 1

Answer:

The fourth proportion is 16

Step-by-step explanation:

15:12::20:x

Product of extremes = Product of means

15x=12*20

x=240/15

x=16

Answer 2

Answer:

16

Explanation:

Let the fourth proportional be x.

15 : 12 :: 20 : x

In proportion,

Product of mean terms = Product of extreme terms

12 × 20 = 15x

15x = 240

x = 240/15

x = 16

Hence, the fourth proportional of 15, 12, 20 is 16.