Home / 20,769.34-28,660.89-11,337.97

Finding the Fourth Proportional to 20,769.34, 28,660.89 and 11,337.97

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Solution

The fourth proportional to 20,769.34, 28,660.89 and 11,337.97 is: 15,645.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.34 : 28,660.89 = 11,337.97 : x
  2. Step 2: Convert to fraction form
    20,769.34/28,660.89 = 11,337.97/x
  3. Step 3: Cross multiply
    20,769.34x = 28,660.89 × 11,337.97
  4. Step 4: Simplify right side
    20,769.34x = 324,956,310.99
  5. Step 5: Solve for x
    x = 324,956,310.99/20,769.34
  6. Step 6: Final answer
    x = 15,645.96

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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.