Question

find the third proportional of 16 and 20.

Answer 1

let third proportion be x.
16:20::20:x
16x=400
x=25

Answer 2

Answer:

The third proportional of $16$ and $20$ is $25 .$

Step-by-step explanation:

In algebra, equivalency between two ratios. In the expression $a/b = c/d$, a and b are in the exact ratio as c and d. A proportion exact is typically set up to solve a word problem in which one of its four quantities exists unknown.

Given:

The numbers are $16$ and $20$.

To find the third proportional of $16$ and $20$.

Formula used:

$&a: b:: c: d$

$&\Rightarrow a / b=c / d$

Let the third proportional be $x$.

$&\Rightarrow 16: 20:: 20: x$

$&\Rightarrow 4 / 5=20 / x$

$&x=100 / 4=25$

Therefore, the third proportional of $16$ and $20$ is $25 .$

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