Finding the Fourth Proportional to 15,348,346.26, 21,180,162.72 and 8,472,680.70
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Solution
The fourth proportional to 15,348,346.26, 21,180,162.72 and 8,472,680.70 is: 11,691,992.93
Step by Step Solution
- Step 1: Write the proportion equation
15,348,346.26 : 21,180,162.72 = 8,472,680.70 : x - Step 2: Convert to fraction form
15,348,346.26/21,180,162.72 = 8,472,680.70/x - Step 3: Cross multiply
15,348,346.26x = 21,180,162.72 × 8,472,680.70 - Step 4: Simplify right side
15,348,346.26x = 179,452,755,900,603.47 - Step 5: Solve for x
x = 179,452,755,900,603.47/15,348,346.26 - Step 6: Final answer
x = 11,691,992.93
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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.