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Finding the Fourth Proportional to 13,348.80, 18,419.72 and 7,379.64

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Solution

The fourth proportional to 13,348.80, 18,419.72 and 7,379.64 is: 10,183.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,348.80 : 18,419.72 = 7,379.64 : x
  2. Step 2: Convert to fraction form
    13,348.80/18,419.72 = 7,379.64/x
  3. Step 3: Cross multiply
    13,348.80x = 18,419.72 × 7,379.64
  4. Step 4: Simplify right side
    13,348.80x = 135,930,902.50
  5. Step 5: Solve for x
    x = 135,930,902.50/13,348.80
  6. Step 6: Final answer
    x = 10,183.01

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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.