Home / 13,857.96-20,785.51-3,469.71

Finding the Fourth Proportional to 13,857.96, 20,785.51 and 3,469.71

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Solution

The fourth proportional to 13,857.96, 20,785.51 and 3,469.71 is: 5,204.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.96 : 20,785.51 = 3,469.71 : x
  2. Step 2: Convert to fraction form
    13,857.96/20,785.51 = 3,469.71/x
  3. Step 3: Cross multiply
    13,857.96x = 20,785.51 × 3,469.71
  4. Step 4: Simplify right side
    13,857.96x = 72,119,691.90
  5. Step 5: Solve for x
    x = 72,119,691.90/13,857.96
  6. Step 6: Final answer
    x = 5,204.21

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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.