Home / 31,937.72-47,917.49-12,221.91

Finding the Fourth Proportional to 31,937.72, 47,917.49 and 12,221.91

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Solution

The fourth proportional to 31,937.72, 47,917.49 and 12,221.91 is: 18,337.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,937.72 : 47,917.49 = 12,221.91 : x
  2. Step 2: Convert to fraction form
    31,937.72/47,917.49 = 12,221.91/x
  3. Step 3: Cross multiply
    31,937.72x = 47,917.49 × 12,221.91
  4. Step 4: Simplify right side
    31,937.72x = 585,643,189.10
  5. Step 5: Solve for x
    x = 585,643,189.10/31,937.72
  6. Step 6: Final answer
    x = 18,337.04

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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.