Home / 27,878.28-38,472.30-15,131.57

Finding the Fourth Proportional to 27,878.28, 38,472.30 and 15,131.57

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Solution

The fourth proportional to 27,878.28, 38,472.30 and 15,131.57 is: 20,881.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,878.28 : 38,472.30 = 15,131.57 : x
  2. Step 2: Convert to fraction form
    27,878.28/38,472.30 = 15,131.57/x
  3. Step 3: Cross multiply
    27,878.28x = 38,472.30 × 15,131.57
  4. Step 4: Simplify right side
    27,878.28x = 582,146,108.15
  5. Step 5: Solve for x
    x = 582,146,108.15/27,878.28
  6. Step 6: Final answer
    x = 20,881.71

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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.