Home / 20,238.74-27,929.62-11,286.82

Finding the Fourth Proportional to 20,238.74, 27,929.62 and 11,286.82

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Solution

The fourth proportional to 20,238.74, 27,929.62 and 11,286.82 is: 15,575.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,238.74 : 27,929.62 = 11,286.82 : x
  2. Step 2: Convert to fraction form
    20,238.74/27,929.62 = 11,286.82/x
  3. Step 3: Cross multiply
    20,238.74x = 27,929.62 × 11,286.82
  4. Step 4: Simplify right side
    20,238.74x = 315,236,593.61
  5. Step 5: Solve for x
    x = 315,236,593.61/20,238.74
  6. Step 6: Final answer
    x = 15,575.90

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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.