Home / 27,126.97-40,711.29-12,138.73

Finding the Fourth Proportional to 27,126.97, 40,711.29 and 12,138.73

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Solution

The fourth proportional to 27,126.97, 40,711.29 and 12,138.73 is: 18,217.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,126.97 : 40,711.29 = 12,138.73 : x
  2. Step 2: Convert to fraction form
    27,126.97/40,711.29 = 12,138.73/x
  3. Step 3: Cross multiply
    27,126.97x = 40,711.29 × 12,138.73
  4. Step 4: Simplify right side
    27,126.97x = 494,183,357.26
  5. Step 5: Solve for x
    x = 494,183,357.26/27,126.97
  6. Step 6: Final answer
    x = 18,217.42

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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.