Home / 20,864.92-28,793.94-11,432.88

Finding the Fourth Proportional to 20,864.92, 28,793.94 and 11,432.88

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Solution

The fourth proportional to 20,864.92, 28,793.94 and 11,432.88 is: 15,777.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.92 : 28,793.94 = 11,432.88 : x
  2. Step 2: Convert to fraction form
    20,864.92/28,793.94 = 11,432.88/x
  3. Step 3: Cross multiply
    20,864.92x = 28,793.94 × 11,432.88
  4. Step 4: Simplify right side
    20,864.92x = 329,197,660.75
  5. Step 5: Solve for x
    x = 329,197,660.75/20,864.92
  6. Step 6: Final answer
    x = 15,777.57

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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.