Home / 20,864.28-28,793.13-11,432.82

Finding the Fourth Proportional to 20,864.28, 28,793.13 and 11,432.82

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Solution

The fourth proportional to 20,864.28, 28,793.13 and 11,432.82 is: 15,777.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.28 : 28,793.13 = 11,432.82 : x
  2. Step 2: Convert to fraction form
    20,864.28/28,793.13 = 11,432.82/x
  3. Step 3: Cross multiply
    20,864.28x = 28,793.13 × 11,432.82
  4. Step 4: Simplify right side
    20,864.28x = 329,186,672.53
  5. Step 5: Solve for x
    x = 329,186,672.53/20,864.28
  6. Step 6: Final answer
    x = 15,777.52

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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.