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Finding the Fourth Proportional to 20,189.60, 27,862.44 and 12,227.32

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Solution

The fourth proportional to 20,189.60, 27,862.44 and 12,227.32 is: 16,874.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.60 : 27,862.44 = 12,227.32 : x
  2. Step 2: Convert to fraction form
    20,189.60/27,862.44 = 12,227.32/x
  3. Step 3: Cross multiply
    20,189.60x = 27,862.44 × 12,227.32
  4. Step 4: Simplify right side
    20,189.60x = 340,682,969.86
  5. Step 5: Solve for x
    x = 340,682,969.86/20,189.60
  6. Step 6: Final answer
    x = 16,874.18

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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.