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Finding the Fourth Proportional to 20,614.53, 28,447.99 and 11,183.10

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Solution

The fourth proportional to 20,614.53, 28,447.99 and 11,183.10 is: 15,432.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,614.53 : 28,447.99 = 11,183.10 : x
  2. Step 2: Convert to fraction form
    20,614.53/28,447.99 = 11,183.10/x
  3. Step 3: Cross multiply
    20,614.53x = 28,447.99 × 11,183.10
  4. Step 4: Simplify right side
    20,614.53x = 318,136,645.24
  5. Step 5: Solve for x
    x = 318,136,645.24/20,614.53
  6. Step 6: Final answer
    x = 15,432.64

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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.