Finding the Fourth Proportional to 10,207,181.70, 15,310,772.55 and 8,435,711.70
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Solution
The fourth proportional to 10,207,181.70, 15,310,772.55 and 8,435,711.70 is: 12,653,567.55
Step by Step Solution
- Step 1: Write the proportion equation
10,207,181.70 : 15,310,772.55 = 8,435,711.70 : x - Step 2: Convert to fraction form
10,207,181.70/15,310,772.55 = 8,435,711.70/x - Step 3: Cross multiply
10,207,181.70x = 15,310,772.55 × 8,435,711.70 - Step 4: Simplify right side
10,207,181.70x = 129,157,263,136,073.83 - Step 5: Solve for x
x = 129,157,263,136,073.83/10,207,181.70 - Step 6: Final answer
x = 12,653,567.55
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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.