Home / 20,188.26-27,863.82-11,691.78

Finding the Fourth Proportional to 20,188.26, 27,863.82 and 11,691.78

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Solution

The fourth proportional to 20,188.26, 27,863.82 and 11,691.78 is: 16,136.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.26 : 27,863.82 = 11,691.78 : x
  2. Step 2: Convert to fraction form
    20,188.26/27,863.82 = 11,691.78/x
  3. Step 3: Cross multiply
    20,188.26x = 27,863.82 × 11,691.78
  4. Step 4: Simplify right side
    20,188.26x = 325,777,653.40
  5. Step 5: Solve for x
    x = 325,777,653.40/20,188.26
  6. Step 6: Final answer
    x = 16,136.99

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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.