Home / 18,687.45-25,794.92-11,136.14

Finding the Fourth Proportional to 18,687.45, 25,794.92 and 11,136.14

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Solution

The fourth proportional to 18,687.45, 25,794.92 and 11,136.14 is: 15,371.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687.45 : 25,794.92 = 11,136.14 : x
  2. Step 2: Convert to fraction form
    18,687.45/25,794.92 = 11,136.14/x
  3. Step 3: Cross multiply
    18,687.45x = 25,794.92 × 11,136.14
  4. Step 4: Simplify right side
    18,687.45x = 287,255,932.74
  5. Step 5: Solve for x
    x = 287,255,932.74/18,687.45
  6. Step 6: Final answer
    x = 15,371.60

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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.