Finding the Fourth Proportional to 10,609,781.80, 15,914,672.70 and 7,955,573.80
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Solution
The fourth proportional to 10,609,781.80, 15,914,672.70 and 7,955,573.80 is: 11,933,360.70
Step by Step Solution
- Step 1: Write the proportion equation
10,609,781.80 : 15,914,672.70 = 7,955,573.80 : x - Step 2: Convert to fraction form
10,609,781.80/15,914,672.70 = 7,955,573.80/x - Step 3: Cross multiply
10,609,781.80x = 15,914,672.70 × 7,955,573.80 - Step 4: Simplify right side
10,609,781.80x = 126,610,353,167,695.25 - Step 5: Solve for x
x = 126,610,353,167,695.25/10,609,781.80 - Step 6: Final answer
x = 11,933,360.70
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Double scale
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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.