Home / 20,732.10-31,098.12-5,149.73

Finding the Fourth Proportional to 20,732.10, 31,098.12 and 5,149.73

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Solution

The fourth proportional to 20,732.10, 31,098.12 and 5,149.73 is: 7,724.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.10 : 31,098.12 = 5,149.73 : x
  2. Step 2: Convert to fraction form
    20,732.10/31,098.12 = 5,149.73/x
  3. Step 3: Cross multiply
    20,732.10x = 31,098.12 × 5,149.73
  4. Step 4: Simplify right side
    20,732.10x = 160,146,921.51
  5. Step 5: Solve for x
    x = 160,146,921.51/20,732.10
  6. Step 6: Final answer
    x = 7,724.59

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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.