Finding the Fourth Proportional to 20,123,570.32, 27,769,126.16 and 11,421,920.08
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Solution
The fourth proportional to 20,123,570.32, 27,769,126.16 and 11,421,920.08 is: 15,761,454.59
Step by Step Solution
- Step 1: Write the proportion equation
20,123,570.32 : 27,769,126.16 = 11,421,920.08 : x - Step 2: Convert to fraction form
20,123,570.32/27,769,126.16 = 11,421,920.08/x - Step 3: Cross multiply
20,123,570.32x = 27,769,126.16 × 11,421,920.08 - Step 4: Simplify right side
20,123,570.32x = 317,176,739,690,957.31 - Step 5: Solve for x
x = 317,176,739,690,957.31/20,123,570.32 - Step 6: Final answer
x = 15,761,454.59
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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.