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Finding the Fourth Proportional to 13,182.67, 18,191.54 and 7,880.41

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Solution

The fourth proportional to 13,182.67, 18,191.54 and 7,880.41 is: 10,874.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,182.67 : 18,191.54 = 7,880.41 : x
  2. Step 2: Convert to fraction form
    13,182.67/18,191.54 = 7,880.41/x
  3. Step 3: Cross multiply
    13,182.67x = 18,191.54 × 7,880.41
  4. Step 4: Simplify right side
    13,182.67x = 143,356,793.73
  5. Step 5: Solve for x
    x = 143,356,793.73/13,182.67
  6. Step 6: Final answer
    x = 10,874.64

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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.