Home / 20,601.25-28,429.76-11,169.83

Finding the Fourth Proportional to 20,601.25, 28,429.76 and 11,169.83

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Solution

The fourth proportional to 20,601.25, 28,429.76 and 11,169.83 is: 15,414.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.25 : 28,429.76 = 11,169.83 : x
  2. Step 2: Convert to fraction form
    20,601.25/28,429.76 = 11,169.83/x
  3. Step 3: Cross multiply
    20,601.25x = 28,429.76 × 11,169.83
  4. Step 4: Simplify right side
    20,601.25x = 317,555,586.14
  5. Step 5: Solve for x
    x = 317,555,586.14/20,601.25
  6. Step 6: Final answer
    x = 15,414.38

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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.