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Finding the Fourth Proportional to 12,540, 17,305.20 and 6,951

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Solution

The fourth proportional to 12,540, 17,305.20 and 6,951 is: 9,592.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,540 : 17,305.20 = 6,951 : x
  2. Step 2: Convert to fraction form
    12,540/17,305.20 = 6,951/x
  3. Step 3: Cross multiply
    12,540x = 17,305.20 × 6,951
  4. Step 4: Simplify right side
    12,540x = 120,288,445.20
  5. Step 5: Solve for x
    x = 120,288,445.20/12,540
  6. Step 6: Final answer
    x = 9,592.38

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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.