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Finding the Fourth Proportional to 22,040.86, 30,416.60 and 11,969.39

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Solution

The fourth proportional to 22,040.86, 30,416.60 and 11,969.39 is: 16,517.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,040.86 : 30,416.60 = 11,969.39 : x
  2. Step 2: Convert to fraction form
    22,040.86/30,416.60 = 11,969.39/x
  3. Step 3: Cross multiply
    22,040.86x = 30,416.60 × 11,969.39
  4. Step 4: Simplify right side
    22,040.86x = 364,068,025.71
  5. Step 5: Solve for x
    x = 364,068,025.71/22,040.86
  6. Step 6: Final answer
    x = 16,517.87

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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.