Question

$\frac{1}{4} = \frac{\quad}{12}$

Explanation:

Step1: Let the missing number be \( x \), so the equation is \( \frac{1}{4}=\frac{x}{12} \).

Step2: Cross - multiply. We know that in a proportion \( \frac{a}{b}=\frac{c}{d} \), \( a\times d = b\times c \). So here, \( 1\times12 = 4\times x \).

Step3: Solve for \( x \). From \( 12 = 4x \), divide both sides by 4. \( x=\frac{12}{4}=3 \).

Answer:

\( 3 \)