Finding the Fourth Proportional to 11,392,421.76, 15,721,640.07 and 6,497,891.78
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Solution
The fourth proportional to 11,392,421.76, 15,721,640.07 and 6,497,891.78 is: 8,967,146.57
Step by Step Solution
- Step 1: Write the proportion equation
11,392,421.76 : 15,721,640.07 = 6,497,891.78 : x - Step 2: Convert to fraction form
11,392,421.76/15,721,640.07 = 6,497,891.78/x - Step 3: Cross multiply
11,392,421.76x = 15,721,640.07 × 6,497,891.78 - Step 4: Simplify right side
11,392,421.76x = 102,157,515,700,363.44 - Step 5: Solve for x
x = 102,157,515,700,363.44/11,392,421.76 - Step 6: Final answer
x = 8,967,146.57
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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.