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Finding the Fourth Proportional to 12,215.52, 18,322.20 and 6,671.34

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Solution

The fourth proportional to 12,215.52, 18,322.20 and 6,671.34 is: 10,006.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.52 : 18,322.20 = 6,671.34 : x
  2. Step 2: Convert to fraction form
    12,215.52/18,322.20 = 6,671.34/x
  3. Step 3: Cross multiply
    12,215.52x = 18,322.20 × 6,671.34
  4. Step 4: Simplify right side
    12,215.52x = 122,233,625.75
  5. Step 5: Solve for x
    x = 122,233,625.75/12,215.52
  6. Step 6: Final answer
    x = 10,006.42

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.