Home / 20,827.79-31,250.78-13,446.66

Finding the Fourth Proportional to 20,827.79, 31,250.78 and 13,446.66

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Solution

The fourth proportional to 20,827.79, 31,250.78 and 13,446.66 is: 20,175.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.79 : 31,250.78 = 13,446.66 : x
  2. Step 2: Convert to fraction form
    20,827.79/31,250.78 = 13,446.66/x
  3. Step 3: Cross multiply
    20,827.79x = 31,250.78 × 13,446.66
  4. Step 4: Simplify right side
    20,827.79x = 420,218,546.16
  5. Step 5: Solve for x
    x = 420,218,546.16/20,827.79
  6. Step 6: Final answer
    x = 20,175.86

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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.