Finding the Fourth Proportional to 20,541,524.16, 28,346,956.92 and 11,373,970.08
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Solution
The fourth proportional to 20,541,524.16, 28,346,956.92 and 11,373,970.08 is: 15,695,886.90
Step by Step Solution
- Step 1: Write the proportion equation
20,541,524.16 : 28,346,956.92 = 11,373,970.08 : x - Step 2: Convert to fraction form
20,541,524.16/28,346,956.92 = 11,373,970.08/x - Step 3: Cross multiply
20,541,524.16x = 28,346,956.92 × 11,373,970.08 - Step 4: Simplify right side
20,541,524.16x = 322,417,439,867,129 - Step 5: Solve for x
x = 322,417,439,867,129/20,541,524.16 - Step 6: Final answer
x = 15,695,886.90
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.