Home / 20,512.38-30,769.22-6,472.54

Finding the Fourth Proportional to 20,512.38, 30,769.22 and 6,472.54

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Solution

The fourth proportional to 20,512.38, 30,769.22 and 6,472.54 is: 9,709.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.38 : 30,769.22 = 6,472.54 : x
  2. Step 2: Convert to fraction form
    20,512.38/30,769.22 = 6,472.54/x
  3. Step 3: Cross multiply
    20,512.38x = 30,769.22 × 6,472.54
  4. Step 4: Simplify right side
    20,512.38x = 199,155,007.22
  5. Step 5: Solve for x
    x = 199,155,007.22/20,512.38
  6. Step 6: Final answer
    x = 9,709.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.