Home / 31,418.39-47,115.18-12,694.89

Finding the Fourth Proportional to 31,418.39, 47,115.18 and 12,694.89

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Solution

The fourth proportional to 31,418.39, 47,115.18 and 12,694.89 is: 19,037.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,418.39 : 47,115.18 = 12,694.89 : x
  2. Step 2: Convert to fraction form
    31,418.39/47,115.18 = 12,694.89/x
  3. Step 3: Cross multiply
    31,418.39x = 47,115.18 × 12,694.89
  4. Step 4: Simplify right side
    31,418.39x = 598,122,027.43
  5. Step 5: Solve for x
    x = 598,122,027.43/31,418.39
  6. Step 6: Final answer
    x = 19,037.33

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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.