Home / 11,175.91-15,422.30-6,139.88

Finding the Fourth Proportional to 11,175.91, 15,422.30 and 6,139.88

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Solution

The fourth proportional to 11,175.91, 15,422.30 and 6,139.88 is: 8,472.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,175.91 : 15,422.30 = 6,139.88 : x
  2. Step 2: Convert to fraction form
    11,175.91/15,422.30 = 6,139.88/x
  3. Step 3: Cross multiply
    11,175.91x = 15,422.30 × 6,139.88
  4. Step 4: Simplify right side
    11,175.91x = 94,691,044.37
  5. Step 5: Solve for x
    x = 94,691,044.37/11,175.91
  6. Step 6: Final answer
    x = 8,472.78

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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.