Home / 15,129.62-20,867.92-11,667.41

Finding the Fourth Proportional to 15,129.62, 20,867.92 and 11,667.41

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Solution

The fourth proportional to 15,129.62, 20,867.92 and 11,667.41 is: 16,092.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,129.62 : 20,867.92 = 11,667.41 : x
  2. Step 2: Convert to fraction form
    15,129.62/20,867.92 = 11,667.41/x
  3. Step 3: Cross multiply
    15,129.62x = 20,867.92 × 11,667.41
  4. Step 4: Simplify right side
    15,129.62x = 243,474,578.49
  5. Step 5: Solve for x
    x = 243,474,578.49/15,129.62
  6. Step 6: Final answer
    x = 16,092.58

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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.