Home / 20,238.50-27,929.25-11,286.38

Finding the Fourth Proportional to 20,238.50, 27,929.25 and 11,286.38

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Solution

The fourth proportional to 20,238.50, 27,929.25 and 11,286.38 is: 15,575.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,238.50 : 27,929.25 = 11,286.38 : x
  2. Step 2: Convert to fraction form
    20,238.50/27,929.25 = 11,286.38/x
  3. Step 3: Cross multiply
    20,238.50x = 27,929.25 × 11,286.38
  4. Step 4: Simplify right side
    20,238.50x = 315,220,198.44
  5. Step 5: Solve for x
    x = 315,220,198.44/20,238.50
  6. Step 6: Final answer
    x = 15,575.27

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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.