Home / 20,530.28-30,773.92-11,634.52

Finding the Fourth Proportional to 20,530.28, 30,773.92 and 11,634.52

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Solution

The fourth proportional to 20,530.28, 30,773.92 and 11,634.52 is: 17,439.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530.28 : 30,773.92 = 11,634.52 : x
  2. Step 2: Convert to fraction form
    20,530.28/30,773.92 = 11,634.52/x
  3. Step 3: Cross multiply
    20,530.28x = 30,773.92 × 11,634.52
  4. Step 4: Simplify right side
    20,530.28x = 358,039,787.72
  5. Step 5: Solve for x
    x = 358,039,787.72/20,530.28
  6. Step 6: Final answer
    x = 17,439.60

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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.