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Finding the Fourth Proportional to 24,019.20, 36,115.20 and 20,217.60

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Solution

The fourth proportional to 24,019.20, 36,115.20 and 20,217.60 is: 30,399.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,019.20 : 36,115.20 = 20,217.60 : x
  2. Step 2: Convert to fraction form
    24,019.20/36,115.20 = 20,217.60/x
  3. Step 3: Cross multiply
    24,019.20x = 36,115.20 × 20,217.60
  4. Step 4: Simplify right side
    24,019.20x = 730,162,667.52
  5. Step 5: Solve for x
    x = 730,162,667.52/24,019.20
  6. Step 6: Final answer
    x = 30,399.13

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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.