Finding the Fourth Proportional to 20,451,247.56, 28,232,948.70 and 12,718,780.92
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Solution
The fourth proportional to 20,451,247.56, 28,232,948.70 and 12,718,780.92 is: 17,558,277.96
Step by Step Solution
- Step 1: Write the proportion equation
20,451,247.56 : 28,232,948.70 = 12,718,780.92 : x - Step 2: Convert to fraction form
20,451,247.56/28,232,948.70 = 12,718,780.92/x - Step 3: Cross multiply
20,451,247.56x = 28,232,948.70 × 12,718,780.92 - Step 4: Simplify right side
20,451,247.56x = 359,088,689,240,898.81 - Step 5: Solve for x
x = 359,088,689,240,898.81/20,451,247.56 - Step 6: Final answer
x = 17,558,277.96
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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.