Home / 20,429.66-28,198.68-11,933.76

Finding the Fourth Proportional to 20,429.66, 28,198.68 and 11,933.76

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Solution

The fourth proportional to 20,429.66, 28,198.68 and 11,933.76 is: 16,471.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.66 : 28,198.68 = 11,933.76 : x
  2. Step 2: Convert to fraction form
    20,429.66/28,198.68 = 11,933.76/x
  3. Step 3: Cross multiply
    20,429.66x = 28,198.68 × 11,933.76
  4. Step 4: Simplify right side
    20,429.66x = 336,516,279.44
  5. Step 5: Solve for x
    x = 336,516,279.44/20,429.66
  6. Step 6: Final answer
    x = 16,471.95

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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.