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Finding the Fourth Proportional to 8,672.34, 13,008.54 and 6,951.90

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Solution

The fourth proportional to 8,672.34, 13,008.54 and 6,951.90 is: 10,427.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.34 : 13,008.54 = 6,951.90 : x
  2. Step 2: Convert to fraction form
    8,672.34/13,008.54 = 6,951.90/x
  3. Step 3: Cross multiply
    8,672.34x = 13,008.54 × 6,951.90
  4. Step 4: Simplify right side
    8,672.34x = 90,434,069.23
  5. Step 5: Solve for x
    x = 90,434,069.23/8,672.34
  6. Step 6: Final answer
    x = 10,427.87

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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.