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Finding the Fourth Proportional to 10,425.17, 15,529.17 and 9,871.13

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Solution

The fourth proportional to 10,425.17, 15,529.17 and 9,871.13 is: 14,703.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,425.17 : 15,529.17 = 9,871.13 : x
  2. Step 2: Convert to fraction form
    10,425.17/15,529.17 = 9,871.13/x
  3. Step 3: Cross multiply
    10,425.17x = 15,529.17 × 9,871.13
  4. Step 4: Simplify right side
    10,425.17x = 153,290,455.86
  5. Step 5: Solve for x
    x = 153,290,455.86/10,425.17
  6. Step 6: Final answer
    x = 14,703.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.