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Finding the Fourth Proportional to 11,231.59, 15,496.89 and 7,251.88

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Solution

The fourth proportional to 11,231.59, 15,496.89 and 7,251.88 is: 10,005.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,231.59 : 15,496.89 = 7,251.88 : x
  2. Step 2: Convert to fraction form
    11,231.59/15,496.89 = 7,251.88/x
  3. Step 3: Cross multiply
    11,231.59x = 15,496.89 × 7,251.88
  4. Step 4: Simplify right side
    11,231.59x = 112,381,509.17
  5. Step 5: Solve for x
    x = 112,381,509.17/11,231.59
  6. Step 6: Final answer
    x = 10,005.85

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1.5x scale

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.