Finding the Fourth Proportional to 19,490,008.20, 29,172,026.70 and 15,206,987.40
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Solution
The fourth proportional to 19,490,008.20, 29,172,026.70 and 15,206,987.40 is: 22,761,336.88
Step by Step Solution
- Step 1: Write the proportion equation
19,490,008.20 : 29,172,026.70 = 15,206,987.40 : x - Step 2: Convert to fraction form
19,490,008.20/29,172,026.70 = 15,206,987.40/x - Step 3: Cross multiply
19,490,008.20x = 29,172,026.70 × 15,206,987.40 - Step 4: Simplify right side
19,490,008.20x = 443,618,642,459,363.56 - Step 5: Solve for x
x = 443,618,642,459,363.56/19,490,008.20 - Step 6: Final answer
x = 22,761,336.88
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.