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Finding the Fourth Proportional to 13,408.17, 18,500.58 and 8,103.29

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Solution

The fourth proportional to 13,408.17, 18,500.58 and 8,103.29 is: 11,180.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.17 : 18,500.58 = 8,103.29 : x
  2. Step 2: Convert to fraction form
    13,408.17/18,500.58 = 8,103.29/x
  3. Step 3: Cross multiply
    13,408.17x = 18,500.58 × 8,103.29
  4. Step 4: Simplify right side
    13,408.17x = 149,915,472.41
  5. Step 5: Solve for x
    x = 149,915,472.41/13,408.17
  6. Step 6: Final answer
    x = 11,180.90

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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.