Home / 12,171.86-18,257.78-2,937.86

Finding the Fourth Proportional to 12,171.86, 18,257.78 and 2,937.86

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Solution

The fourth proportional to 12,171.86, 18,257.78 and 2,937.86 is: 4,406.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,171.86 : 18,257.78 = 2,937.86 : x
  2. Step 2: Convert to fraction form
    12,171.86/18,257.78 = 2,937.86/x
  3. Step 3: Cross multiply
    12,171.86x = 18,257.78 × 2,937.86
  4. Step 4: Simplify right side
    12,171.86x = 53,638,717.61
  5. Step 5: Solve for x
    x = 53,638,717.61/12,171.86
  6. Step 6: Final answer
    x = 4,406.78

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.