Home / 20,769.28-28,661.52-11,337.82

Finding the Fourth Proportional to 20,769.28, 28,661.52 and 11,337.82

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Solution

The fourth proportional to 20,769.28, 28,661.52 and 11,337.82 is: 15,646.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.28 : 28,661.52 = 11,337.82 : x
  2. Step 2: Convert to fraction form
    20,769.28/28,661.52 = 11,337.82/x
  3. Step 3: Cross multiply
    20,769.28x = 28,661.52 × 11,337.82
  4. Step 4: Simplify right side
    20,769.28x = 324,959,154.69
  5. Step 5: Solve for x
    x = 324,959,154.69/20,769.28
  6. Step 6: Final answer
    x = 15,646.14

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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.