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Finding the Fourth Proportional to 13,499.40, 18,630.57 and 8,467.44

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Solution

The fourth proportional to 13,499.40, 18,630.57 and 8,467.44 is: 11,685.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,499.40 : 18,630.57 = 8,467.44 : x
  2. Step 2: Convert to fraction form
    13,499.40/18,630.57 = 8,467.44/x
  3. Step 3: Cross multiply
    13,499.40x = 18,630.57 × 8,467.44
  4. Step 4: Simplify right side
    13,499.40x = 157,753,233.64
  5. Step 5: Solve for x
    x = 157,753,233.64/13,499.40
  6. Step 6: Final answer
    x = 11,685.94

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.