Finding the Fourth Proportional to 18,462,609.72, 25,479,379.80 and 11,122,753.68
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Solution
The fourth proportional to 18,462,609.72, 25,479,379.80 and 11,122,753.68 is: 15,349,989.50
Step by Step Solution
- Step 1: Write the proportion equation
18,462,609.72 : 25,479,379.80 = 11,122,753.68 : x - Step 2: Convert to fraction form
18,462,609.72/25,479,379.80 = 11,122,753.68/x - Step 3: Cross multiply
18,462,609.72x = 25,479,379.80 × 11,122,753.68 - Step 4: Simplify right side
18,462,609.72x = 283,400,865,434,567.69 - Step 5: Solve for x
x = 283,400,865,434,567.69/18,462,609.72 - Step 6: Final answer
x = 15,349,989.50
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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.