Finding the Fourth Proportional to 10,021,010.40, 15,031,515.60 and 8,586,119.70
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Solution
The fourth proportional to 10,021,010.40, 15,031,515.60 and 8,586,119.70 is: 12,879,179.55
Step by Step Solution
- Step 1: Write the proportion equation
10,021,010.40 : 15,031,515.60 = 8,586,119.70 : x - Step 2: Convert to fraction form
10,021,010.40/15,031,515.60 = 8,586,119.70/x - Step 3: Cross multiply
10,021,010.40x = 15,031,515.60 × 8,586,119.70 - Step 4: Simplify right side
10,021,010.40x = 129,062,392,214,017.31 - Step 5: Solve for x
x = 129,062,392,214,017.31/10,021,010.40 - Step 6: Final answer
x = 12,879,179.55
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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.