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Finding the Fourth Proportional to 12,140.67, 18,211.04 and 3,375.60

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Solution

The fourth proportional to 12,140.67, 18,211.04 and 3,375.60 is: 5,063.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140.67 : 18,211.04 = 3,375.60 : x
  2. Step 2: Convert to fraction form
    12,140.67/18,211.04 = 3,375.60/x
  3. Step 3: Cross multiply
    12,140.67x = 18,211.04 × 3,375.60
  4. Step 4: Simplify right side
    12,140.67x = 61,473,186.62
  5. Step 5: Solve for x
    x = 61,473,186.62/12,140.67
  6. Step 6: Final answer
    x = 5,063.41

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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.