Finding the Fourth Proportional to 10,966.62, 15,134.05 and 10,129.49
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Solution
The fourth proportional to 10,966.62, 15,134.05 and 10,129.49 is: 13,978.80
Step by Step Solution
- Step 1: Write the proportion equation
10,966.62 : 15,134.05 = 10,129.49 : x - Step 2: Convert to fraction form
10,966.62/15,134.05 = 10,129.49/x - Step 3: Cross multiply
10,966.62x = 15,134.05 × 10,129.49 - Step 4: Simplify right side
10,966.62x = 153,300,208.13 - Step 5: Solve for x
x = 153,300,208.13/10,966.62 - Step 6: Final answer
x = 13,978.80
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.