Finding the Fourth Proportional to 21,730,220.40, 29,985,948.84 and 12,563,454
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Solution
The fourth proportional to 21,730,220.40, 29,985,948.84 and 12,563,454 is: 17,336,551.68
Step by Step Solution
- Step 1: Write the proportion equation
21,730,220.40 : 29,985,948.84 = 12,563,454 : x - Step 2: Convert to fraction form
21,730,220.40/29,985,948.84 = 12,563,454/x - Step 3: Cross multiply
21,730,220.40x = 29,985,948.84 × 12,563,454 - Step 4: Simplify right side
21,730,220.40x = 376,727,088,897,693.38 - Step 5: Solve for x
x = 376,727,088,897,693.38/21,730,220.40 - Step 6: Final answer
x = 17,336,551.68
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1.5x scale
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.