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Finding the Fourth Proportional to 10,891.76, 15,030.62 and 5,923.76

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Solution

The fourth proportional to 10,891.76, 15,030.62 and 5,923.76 is: 8,174.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,891.76 : 15,030.62 = 5,923.76 : x
  2. Step 2: Convert to fraction form
    10,891.76/15,030.62 = 5,923.76/x
  3. Step 3: Cross multiply
    10,891.76x = 15,030.62 × 5,923.76
  4. Step 4: Simplify right side
    10,891.76x = 89,037,785.53
  5. Step 5: Solve for x
    x = 89,037,785.53/10,891.76
  6. Step 6: Final answer
    x = 8,174.78

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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.