Home / 27,780.14-38,336.68-15,204.90

Finding the Fourth Proportional to 27,780.14, 38,336.68 and 15,204.90

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Solution

The fourth proportional to 27,780.14, 38,336.68 and 15,204.90 is: 20,982.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,780.14 : 38,336.68 = 15,204.90 : x
  2. Step 2: Convert to fraction form
    27,780.14/38,336.68 = 15,204.90/x
  3. Step 3: Cross multiply
    27,780.14x = 38,336.68 × 15,204.90
  4. Step 4: Simplify right side
    27,780.14x = 582,905,385.73
  5. Step 5: Solve for x
    x = 582,905,385.73/27,780.14
  6. Step 6: Final answer
    x = 20,982.81

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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.