Home / 20,658.11-31,005.11-11,306.66

Finding the Fourth Proportional to 20,658.11, 31,005.11 and 11,306.66

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Solution

The fourth proportional to 20,658.11, 31,005.11 and 11,306.66 is: 16,969.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.11 : 31,005.11 = 11,306.66 : x
  2. Step 2: Convert to fraction form
    20,658.11/31,005.11 = 11,306.66/x
  3. Step 3: Cross multiply
    20,658.11x = 31,005.11 × 11,306.66
  4. Step 4: Simplify right side
    20,658.11x = 350,564,110.27
  5. Step 5: Solve for x
    x = 350,564,110.27/20,658.11
  6. Step 6: Final answer
    x = 16,969.81

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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.