Home / 13,414.11-18,512.28-7,749.90

Finding the Fourth Proportional to 13,414.11, 18,512.28 and 7,749.90

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Solution

The fourth proportional to 13,414.11, 18,512.28 and 7,749.90 is: 10,695.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,414.11 : 18,512.28 = 7,749.90 : x
  2. Step 2: Convert to fraction form
    13,414.11/18,512.28 = 7,749.90/x
  3. Step 3: Cross multiply
    13,414.11x = 18,512.28 × 7,749.90
  4. Step 4: Simplify right side
    13,414.11x = 143,468,318.77
  5. Step 5: Solve for x
    x = 143,468,318.77/13,414.11
  6. Step 6: Final answer
    x = 10,695.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.