Finding the Fourth Proportional to 12,221,431.70, 18,332,147.55 and 5,502,967.70
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Solution
The fourth proportional to 12,221,431.70, 18,332,147.55 and 5,502,967.70 is: 8,254,451.55
Step by Step Solution
- Step 1: Write the proportion equation
12,221,431.70 : 18,332,147.55 = 5,502,967.70 : x - Step 2: Convert to fraction form
12,221,431.70/18,332,147.55 = 5,502,967.70/x - Step 3: Cross multiply
12,221,431.70x = 18,332,147.55 × 5,502,967.70 - Step 4: Simplify right side
12,221,431.70x = 100,881,215,839,284.14 - Step 5: Solve for x
x = 100,881,215,839,284.14/12,221,431.70 - Step 6: Final answer
x = 8,254,451.55
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Similar ratio
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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.