Home / 20,753.28-28,639.44-11,321.82

Finding the Fourth Proportional to 20,753.28, 28,639.44 and 11,321.82

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Solution

The fourth proportional to 20,753.28, 28,639.44 and 11,321.82 is: 15,624.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753.28 : 28,639.44 = 11,321.82 : x
  2. Step 2: Convert to fraction form
    20,753.28/28,639.44 = 11,321.82/x
  3. Step 3: Cross multiply
    20,753.28x = 28,639.44 × 11,321.82
  4. Step 4: Simplify right side
    20,753.28x = 324,250,584.58
  5. Step 5: Solve for x
    x = 324,250,584.58/20,753.28
  6. Step 6: Final answer
    x = 15,624.06

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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.