Home / 20,766.24-31,149.59-5,183.87

Finding the Fourth Proportional to 20,766.24, 31,149.59 and 5,183.87

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Solution

The fourth proportional to 20,766.24, 31,149.59 and 5,183.87 is: 7,775.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.24 : 31,149.59 = 5,183.87 : x
  2. Step 2: Convert to fraction form
    20,766.24/31,149.59 = 5,183.87/x
  3. Step 3: Cross multiply
    20,766.24x = 31,149.59 × 5,183.87
  4. Step 4: Simplify right side
    20,766.24x = 161,475,243.45
  5. Step 5: Solve for x
    x = 161,475,243.45/20,766.24
  6. Step 6: Final answer
    x = 7,775.85

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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.