Finding the Fourth Proportional to 21,632,338.70, 29,847,854.84 and 12,807,407.98
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Solution
The fourth proportional to 21,632,338.70, 29,847,854.84 and 12,807,407.98 is: 17,671,397.42
Step by Step Solution
- Step 1: Write the proportion equation
21,632,338.70 : 29,847,854.84 = 12,807,407.98 : x - Step 2: Convert to fraction form
21,632,338.70/29,847,854.84 = 12,807,407.98/x - Step 3: Cross multiply
21,632,338.70x = 29,847,854.84 × 12,807,407.98 - Step 4: Simplify right side
21,632,338.70x = 382,273,654,263,697.62 - Step 5: Solve for x
x = 382,273,654,263,697.62/21,632,338.70 - Step 6: Final answer
x = 17,671,397.42
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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.