Home / 20,125.38-30,177.82-11,821.62

Finding the Fourth Proportional to 20,125.38, 30,177.82 and 11,821.62

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Solution

The fourth proportional to 20,125.38, 30,177.82 and 11,821.62 is: 17,726.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,125.38 : 30,177.82 = 11,821.62 : x
  2. Step 2: Convert to fraction form
    20,125.38/30,177.82 = 11,821.62/x
  3. Step 3: Cross multiply
    20,125.38x = 30,177.82 × 11,821.62
  4. Step 4: Simplify right side
    20,125.38x = 356,750,848.41
  5. Step 5: Solve for x
    x = 356,750,848.41/20,125.38
  6. Step 6: Final answer
    x = 17,726.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.