Home / 11,973.78-17,961.17-3,540.30

Finding the Fourth Proportional to 11,973.78, 17,961.17 and 3,540.30

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Solution

The fourth proportional to 11,973.78, 17,961.17 and 3,540.30 is: 5,310.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,973.78 : 17,961.17 = 3,540.30 : x
  2. Step 2: Convert to fraction form
    11,973.78/17,961.17 = 3,540.30/x
  3. Step 3: Cross multiply
    11,973.78x = 17,961.17 × 3,540.30
  4. Step 4: Simplify right side
    11,973.78x = 63,587,930.15
  5. Step 5: Solve for x
    x = 63,587,930.15/11,973.78
  6. Step 6: Final answer
    x = 5,310.60

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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.