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Finding the Fourth Proportional to 33,405.80, 50,112.08 and 12,351.47

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Solution

The fourth proportional to 33,405.80, 50,112.08 and 12,351.47 is: 18,528.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,405.80 : 50,112.08 = 12,351.47 : x
  2. Step 2: Convert to fraction form
    33,405.80/50,112.08 = 12,351.47/x
  3. Step 3: Cross multiply
    33,405.80x = 50,112.08 × 12,351.47
  4. Step 4: Simplify right side
    33,405.80x = 618,957,791.00
  5. Step 5: Solve for x
    x = 618,957,791.00/33,405.80
  6. Step 6: Final answer
    x = 18,528.45

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.