Home / 20,769.92-31,166.40-15,234.56

Finding the Fourth Proportional to 20,769.92, 31,166.40 and 15,234.56

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Solution

The fourth proportional to 20,769.92, 31,166.40 and 15,234.56 is: 22,860.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.92 : 31,166.40 = 15,234.56 : x
  2. Step 2: Convert to fraction form
    20,769.92/31,166.40 = 15,234.56/x
  3. Step 3: Cross multiply
    20,769.92x = 31,166.40 × 15,234.56
  4. Step 4: Simplify right side
    20,769.92x = 474,806,390.78
  5. Step 5: Solve for x
    x = 474,806,390.78/20,769.92
  6. Step 6: Final answer
    x = 22,860.29

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1.5x scale

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.