Home / 20,822.24-28,732.20-11,869.76

Finding the Fourth Proportional to 20,822.24, 28,732.20 and 11,869.76

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Solution

The fourth proportional to 20,822.24, 28,732.20 and 11,869.76 is: 16,378.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,822.24 : 28,732.20 = 11,869.76 : x
  2. Step 2: Convert to fraction form
    20,822.24/28,732.20 = 11,869.76/x
  3. Step 3: Cross multiply
    20,822.24x = 28,732.20 × 11,869.76
  4. Step 4: Simplify right side
    20,822.24x = 341,044,318.27
  5. Step 5: Solve for x
    x = 341,044,318.27/20,822.24
  6. Step 6: Final answer
    x = 16,378.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.