3:4 = N:24
You asked:
Solve \(3 : 4=N : 24\) for the variable \(N\).
MathBot Answer:
$$\begin{aligned}N &= 18\end{aligned}$$
Express both ratios as fractions. \[\frac{3}{4} = \frac{N}{24}\]
Cross-multiply and solve for the unknown. $$\begin{aligned}\frac{3}{4} &= \frac{N}{24} \\ 72 &= 4 N \\ N &&= 18 \end{aligned}$$