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Finding the Fourth Proportional to 18,291, 25,247.34 and 11,667

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Solution

The fourth proportional to 18,291, 25,247.34 and 11,667 is: 16,104.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291 : 25,247.34 = 11,667 : x
  2. Step 2: Convert to fraction form
    18,291/25,247.34 = 11,667/x
  3. Step 3: Cross multiply
    18,291x = 25,247.34 × 11,667
  4. Step 4: Simplify right side
    18,291x = 294,560,715.78
  5. Step 5: Solve for x
    x = 294,560,715.78/18,291
  6. Step 6: Final answer
    x = 16,104.13

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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.