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Finding the Fourth Proportional to 18,593.75, 25,660.75 and 11,521.55

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Solution

The fourth proportional to 18,593.75, 25,660.75 and 11,521.55 is: 15,900.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,593.75 : 25,660.75 = 11,521.55 : x
  2. Step 2: Convert to fraction form
    18,593.75/25,660.75 = 11,521.55/x
  3. Step 3: Cross multiply
    18,593.75x = 25,660.75 × 11,521.55
  4. Step 4: Simplify right side
    18,593.75x = 295,651,614.16
  5. Step 5: Solve for x
    x = 295,651,614.16/18,593.75
  6. Step 6: Final answer
    x = 15,900.59

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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.