Home / 20,902.24-31,352.95-5,107.38

Finding the Fourth Proportional to 20,902.24, 31,352.95 and 5,107.38

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Solution

The fourth proportional to 20,902.24, 31,352.95 and 5,107.38 is: 7,660.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902.24 : 31,352.95 = 5,107.38 : x
  2. Step 2: Convert to fraction form
    20,902.24/31,352.95 = 5,107.38/x
  3. Step 3: Cross multiply
    20,902.24x = 31,352.95 × 5,107.38
  4. Step 4: Simplify right side
    20,902.24x = 160,131,429.77
  5. Step 5: Solve for x
    x = 160,131,429.77/20,902.24
  6. Step 6: Final answer
    x = 7,660.97

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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.