Finding the Fourth Proportional to 21,081,691.42, 29,081,049.35 and 12,260,176.79
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Solution
The fourth proportional to 21,081,691.42, 29,081,049.35 and 12,260,176.79 is: 16,912,248.60
Step by Step Solution
- Step 1: Write the proportion equation
21,081,691.42 : 29,081,049.35 = 12,260,176.79 : x - Step 2: Convert to fraction form
21,081,691.42/29,081,049.35 = 12,260,176.79/x - Step 3: Cross multiply
21,081,691.42x = 29,081,049.35 × 12,260,176.79 - Step 4: Simplify right side
21,081,691.42x = 356,538,806,063,008.44 - Step 5: Solve for x
x = 356,538,806,063,008.44/21,081,691.42 - Step 6: Final answer
x = 16,912,248.60
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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.