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Finding the Fourth Proportional to 12,652.61, 17,468.06 and 8,679.56

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Solution

The fourth proportional to 12,652.61, 17,468.06 and 8,679.56 is: 11,982.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,652.61 : 17,468.06 = 8,679.56 : x
  2. Step 2: Convert to fraction form
    12,652.61/17,468.06 = 8,679.56/x
  3. Step 3: Cross multiply
    12,652.61x = 17,468.06 × 8,679.56
  4. Step 4: Simplify right side
    12,652.61x = 151,614,944.12
  5. Step 5: Solve for x
    x = 151,614,944.12/12,652.61
  6. Step 6: Final answer
    x = 11,982.90

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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.