Finding the Fourth Proportional to 21,332,379.27, 29,438,462.55 and 11,542,607.49
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Solution
The fourth proportional to 21,332,379.27, 29,438,462.55 and 11,542,607.49 is: 15,928,678.84
Step by Step Solution
- Step 1: Write the proportion equation
21,332,379.27 : 29,438,462.55 = 11,542,607.49 : x - Step 2: Convert to fraction form
21,332,379.27/29,438,462.55 = 11,542,607.49/x - Step 3: Cross multiply
21,332,379.27x = 29,438,462.55 × 11,542,607.49 - Step 4: Simplify right side
21,332,379.27x = 339,796,618,323,714.50 - Step 5: Solve for x
x = 339,796,618,323,714.50/21,332,379.27 - Step 6: Final answer
x = 15,928,678.84
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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.