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Finding the Fourth Proportional to 13,218.15, 18,241.89 and 8,734.04

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Solution

The fourth proportional to 13,218.15, 18,241.89 and 8,734.04 is: 12,053.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.15 : 18,241.89 = 8,734.04 : x
  2. Step 2: Convert to fraction form
    13,218.15/18,241.89 = 8,734.04/x
  3. Step 3: Cross multiply
    13,218.15x = 18,241.89 × 8,734.04
  4. Step 4: Simplify right side
    13,218.15x = 159,325,305.73
  5. Step 5: Solve for x
    x = 159,325,305.73/13,218.15
  6. Step 6: Final answer
    x = 12,053.53

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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.