Finding the Fourth Proportional to 10,452,353.40, 15,678,530.10 and 10,292,921.10
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Solution
The fourth proportional to 10,452,353.40, 15,678,530.10 and 10,292,921.10 is: 15,439,381.65
Step by Step Solution
- Step 1: Write the proportion equation
10,452,353.40 : 15,678,530.10 = 10,292,921.10 : x - Step 2: Convert to fraction form
10,452,353.40/15,678,530.10 = 10,292,921.10/x - Step 3: Cross multiply
10,452,353.40x = 15,678,530.10 × 10,292,921.10 - Step 4: Simplify right side
10,452,353.40x = 161,377,873,283,275.09 - Step 5: Solve for x
x = 161,377,873,283,275.09/10,452,353.40 - Step 6: Final answer
x = 15,439,381.65
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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.