Finding the Fourth Proportional to 21,376,651.16, 29,498,988.30 and 11,586,885.17
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Solution
The fourth proportional to 21,376,651.16, 29,498,988.30 and 11,586,885.17 is: 15,989,473.15
Step by Step Solution
- Step 1: Write the proportion equation
21,376,651.16 : 29,498,988.30 = 11,586,885.17 : x - Step 2: Convert to fraction form
21,376,651.16/29,498,988.30 = 11,586,885.17/x - Step 3: Cross multiply
21,376,651.16x = 29,498,988.30 × 11,586,885.17 - Step 4: Simplify right side
21,376,651.16x = 341,801,389,872,327.75 - Step 5: Solve for x
x = 341,801,389,872,327.75/21,376,651.16 - Step 6: Final answer
x = 15,989,473.15
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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.