Finding the Fourth Proportional to 10,952,128.70, 16,428,193.05 and 8,117,776.70
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Solution
The fourth proportional to 10,952,128.70, 16,428,193.05 and 8,117,776.70 is: 12,176,665.05
Step by Step Solution
- Step 1: Write the proportion equation
10,952,128.70 : 16,428,193.05 = 8,117,776.70 : x - Step 2: Convert to fraction form
10,952,128.70/16,428,193.05 = 8,117,776.70/x - Step 3: Cross multiply
10,952,128.70x = 16,428,193.05 × 8,117,776.70 - Step 4: Simplify right side
10,952,128.70x = 133,360,402,764,391.94 - Step 5: Solve for x
x = 133,360,402,764,391.94/10,952,128.70 - Step 6: Final answer
x = 12,176,665.05
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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.