Finding the Fourth Proportional to 11,512,982.98, 15,887,872.20 and 6,356,306.62
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Solution
The fourth proportional to 11,512,982.98, 15,887,872.20 and 6,356,306.62 is: 8,771,678.67
Step by Step Solution
- Step 1: Write the proportion equation
11,512,982.98 : 15,887,872.20 = 6,356,306.62 : x - Step 2: Convert to fraction form
11,512,982.98/15,887,872.20 = 6,356,306.62/x - Step 3: Cross multiply
11,512,982.98x = 15,887,872.20 × 6,356,306.62 - Step 4: Simplify right side
11,512,982.98x = 100,988,187,242,573.97 - Step 5: Solve for x
x = 100,988,187,242,573.97/11,512,982.98 - Step 6: Final answer
x = 8,771,678.67
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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.