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Finding the Fourth Proportional to 10,008.66, 15,011.10 and 5,081.16

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Solution

The fourth proportional to 10,008.66, 15,011.10 and 5,081.16 is: 7,620.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,008.66 : 15,011.10 = 5,081.16 : x
  2. Step 2: Convert to fraction form
    10,008.66/15,011.10 = 5,081.16/x
  3. Step 3: Cross multiply
    10,008.66x = 15,011.10 × 5,081.16
  4. Step 4: Simplify right side
    10,008.66x = 76,273,800.88
  5. Step 5: Solve for x
    x = 76,273,800.88/10,008.66
  6. Step 6: Final answer
    x = 7,620.78

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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.