Home / 27,680.55-38,198.97-15,105.30

Finding the Fourth Proportional to 27,680.55, 38,198.97 and 15,105.30

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Solution

The fourth proportional to 27,680.55, 38,198.97 and 15,105.30 is: 20,845.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,680.55 : 38,198.97 = 15,105.30 : x
  2. Step 2: Convert to fraction form
    27,680.55/38,198.97 = 15,105.30/x
  3. Step 3: Cross multiply
    27,680.55x = 38,198.97 × 15,105.30
  4. Step 4: Simplify right side
    27,680.55x = 577,006,901.54
  5. Step 5: Solve for x
    x = 577,006,901.54/27,680.55
  6. Step 6: Final answer
    x = 20,845.21

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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.