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Finding the Fourth Proportional to 30,381.22, 41,929.11 and 18,443.62

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Solution

The fourth proportional to 30,381.22, 41,929.11 and 18,443.62 is: 25,454.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,381.22 : 41,929.11 = 18,443.62 : x
  2. Step 2: Convert to fraction form
    30,381.22/41,929.11 = 18,443.62/x
  3. Step 3: Cross multiply
    30,381.22x = 41,929.11 × 18,443.62
  4. Step 4: Simplify right side
    30,381.22x = 773,324,571.78
  5. Step 5: Solve for x
    x = 773,324,571.78/30,381.22
  6. Step 6: Final answer
    x = 25,454.03

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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.