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Finding the Fourth Proportional to 20,552.68, 28,363.26 and 12,169.18

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Solution

The fourth proportional to 20,552.68, 28,363.26 and 12,169.18 is: 16,793.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,552.68 : 28,363.26 = 12,169.18 : x
  2. Step 2: Convert to fraction form
    20,552.68/28,363.26 = 12,169.18/x
  3. Step 3: Cross multiply
    20,552.68x = 28,363.26 × 12,169.18
  4. Step 4: Simplify right side
    20,552.68x = 345,157,616.33
  5. Step 5: Solve for x
    x = 345,157,616.33/20,552.68
  6. Step 6: Final answer
    x = 16,793.80

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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.