Home / 20,769.03-28,660.82-11,337.75

Finding the Fourth Proportional to 20,769.03, 28,660.82 and 11,337.75

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Solution

The fourth proportional to 20,769.03, 28,660.82 and 11,337.75 is: 15,645.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.03 : 28,660.82 = 11,337.75 : x
  2. Step 2: Convert to fraction form
    20,769.03/28,660.82 = 11,337.75/x
  3. Step 3: Cross multiply
    20,769.03x = 28,660.82 × 11,337.75
  4. Step 4: Simplify right side
    20,769.03x = 324,949,155.27
  5. Step 5: Solve for x
    x = 324,949,155.27/20,769.03
  6. Step 6: Final answer
    x = 15,645.85

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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.