Home / 31,910.40-47,867.22-12,186.09

Finding the Fourth Proportional to 31,910.40, 47,867.22 and 12,186.09

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Solution

The fourth proportional to 31,910.40, 47,867.22 and 12,186.09 is: 18,279.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,910.40 : 47,867.22 = 12,186.09 : x
  2. Step 2: Convert to fraction form
    31,910.40/47,867.22 = 12,186.09/x
  3. Step 3: Cross multiply
    31,910.40x = 47,867.22 × 12,186.09
  4. Step 4: Simplify right side
    31,910.40x = 583,314,250.97
  5. Step 5: Solve for x
    x = 583,314,250.97/31,910.40
  6. Step 6: Final answer
    x = 18,279.75

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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.