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Finding the Fourth Proportional to 11,934.97, 17,891.51 and 4,138.31

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Solution

The fourth proportional to 11,934.97, 17,891.51 and 4,138.31 is: 6,203.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,934.97 : 17,891.51 = 4,138.31 : x
  2. Step 2: Convert to fraction form
    11,934.97/17,891.51 = 4,138.31/x
  3. Step 3: Cross multiply
    11,934.97x = 17,891.51 × 4,138.31
  4. Step 4: Simplify right side
    11,934.97x = 74,040,638.79
  5. Step 5: Solve for x
    x = 74,040,638.79/11,934.97
  6. Step 6: Final answer
    x = 6,203.67

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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.