Home / 20,769.43-28,661.97-11,338.24

Finding the Fourth Proportional to 20,769.43, 28,661.97 and 11,338.24

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Solution

The fourth proportional to 20,769.43, 28,661.97 and 11,338.24 is: 15,646.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.43 : 28,661.97 = 11,338.24 : x
  2. Step 2: Convert to fraction form
    20,769.43/28,661.97 = 11,338.24/x
  3. Step 3: Cross multiply
    20,769.43x = 28,661.97 × 11,338.24
  4. Step 4: Simplify right side
    20,769.43x = 324,976,294.73
  5. Step 5: Solve for x
    x = 324,976,294.73/20,769.43
  6. Step 6: Final answer
    x = 15,646.86

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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.