Finding the Fourth Proportional to 19,579,712.40, 29,369,568.60 and 12,367,861.20
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Solution
The fourth proportional to 19,579,712.40, 29,369,568.60 and 12,367,861.20 is: 18,551,791.80
Step by Step Solution
- Step 1: Write the proportion equation
19,579,712.40 : 29,369,568.60 = 12,367,861.20 : x - Step 2: Convert to fraction form
19,579,712.40/29,369,568.60 = 12,367,861.20/x - Step 3: Cross multiply
19,579,712.40x = 29,369,568.60 × 12,367,861.20 - Step 4: Simplify right side
19,579,712.40x = 363,238,747,948,678.31 - Step 5: Solve for x
x = 363,238,747,948,678.31/19,579,712.40 - Step 6: Final answer
x = 18,551,791.80
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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.