Question

Solve the given proportion $4:y=16:20$

Answer 1

$4:y=16:20$

$\Rightarrow \frac{4}{y}=\frac{16}{20}$

$\Rightarrow \frac{4}{y}=\frac{4}{5}$(Simplifying the terms by reducing it and cancelling the like numbers)

$\Rightarrow y=\frac{4\times 5}{4}$

$\Rightarrow y=5$