Home / 18,691.96-25,789.68-11,136.48

Finding the Fourth Proportional to 18,691.96, 25,789.68 and 11,136.48

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Solution

The fourth proportional to 18,691.96, 25,789.68 and 11,136.48 is: 15,365.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.96 : 25,789.68 = 11,136.48 : x
  2. Step 2: Convert to fraction form
    18,691.96/25,789.68 = 11,136.48/x
  3. Step 3: Cross multiply
    18,691.96x = 25,789.68 × 11,136.48
  4. Step 4: Simplify right side
    18,691.96x = 287,206,255.53
  5. Step 5: Solve for x
    x = 287,206,255.53/18,691.96
  6. Step 6: Final answer
    x = 15,365.23

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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.