Home / 11,458.66-17,187.98-3,138.76

Finding the Fourth Proportional to 11,458.66, 17,187.98 and 3,138.76

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Solution

The fourth proportional to 11,458.66, 17,187.98 and 3,138.76 is: 4,708.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,458.66 : 17,187.98 = 3,138.76 : x
  2. Step 2: Convert to fraction form
    11,458.66/17,187.98 = 3,138.76/x
  3. Step 3: Cross multiply
    11,458.66x = 17,187.98 × 3,138.76
  4. Step 4: Simplify right side
    11,458.66x = 53,948,944.10
  5. Step 5: Solve for x
    x = 53,948,944.10/11,458.66
  6. Step 6: Final answer
    x = 4,708.14

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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.