Home / 27,781.38-38,336.82-15,203.70

Finding the Fourth Proportional to 27,781.38, 38,336.82 and 15,203.70

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Solution

The fourth proportional to 27,781.38, 38,336.82 and 15,203.70 is: 20,980.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,781.38 : 38,336.82 = 15,203.70 : x
  2. Step 2: Convert to fraction form
    27,781.38/38,336.82 = 15,203.70/x
  3. Step 3: Cross multiply
    27,781.38x = 38,336.82 × 15,203.70
  4. Step 4: Simplify right side
    27,781.38x = 582,861,510.23
  5. Step 5: Solve for x
    x = 582,861,510.23/27,781.38
  6. Step 6: Final answer
    x = 20,980.29

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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.