Home / 27,691.08-38,213.82-15,115.92

Finding the Fourth Proportional to 27,691.08, 38,213.82 and 15,115.92

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Solution

The fourth proportional to 27,691.08, 38,213.82 and 15,115.92 is: 20,860.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,691.08 : 38,213.82 = 15,115.92 : x
  2. Step 2: Convert to fraction form
    27,691.08/38,213.82 = 15,115.92/x
  3. Step 3: Cross multiply
    27,691.08x = 38,213.82 × 15,115.92
  4. Step 4: Simplify right side
    27,691.08x = 577,637,046.01
  5. Step 5: Solve for x
    x = 577,637,046.01/27,691.08
  6. Step 6: Final answer
    x = 20,860.04

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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.