Finding the Fourth Proportional to 18,145,475.80, 27,218,213.70 and 12,098,858.20
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Solution
The fourth proportional to 18,145,475.80, 27,218,213.70 and 12,098,858.20 is: 18,148,287.30
Step by Step Solution
- Step 1: Write the proportion equation
18,145,475.80 : 27,218,213.70 = 12,098,858.20 : x - Step 2: Convert to fraction form
18,145,475.80/27,218,213.70 = 12,098,858.20/x - Step 3: Cross multiply
18,145,475.80x = 27,218,213.70 × 12,098,858.20 - Step 4: Simplify right side
18,145,475.80x = 329,309,308,013,597.31 - Step 5: Solve for x
x = 329,309,308,013,597.31/18,145,475.80 - Step 6: Final answer
x = 18,148,287.30
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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.