Finding the Fourth Proportional to 21,649,816.33, 29,876,744.84 and 12,947,988.76
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Solution
The fourth proportional to 21,649,816.33, 29,876,744.84 and 12,947,988.76 is: 17,868,223.47
Step by Step Solution
- Step 1: Write the proportion equation
21,649,816.33 : 29,876,744.84 = 12,947,988.76 : x - Step 2: Convert to fraction form
21,649,816.33/29,876,744.84 = 12,947,988.76/x - Step 3: Cross multiply
21,649,816.33x = 29,876,744.84 × 12,947,988.76 - Step 4: Simplify right side
21,649,816.33x = 386,843,756,234,276.19 - Step 5: Solve for x
x = 386,843,756,234,276.19/21,649,816.33 - Step 6: Final answer
x = 17,868,223.47
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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.