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Finding the Fourth Proportional to 33,991.01, 50,978.80 and 12,923.55

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Solution

The fourth proportional to 33,991.01, 50,978.80 and 12,923.55 is: 19,382.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,991.01 : 50,978.80 = 12,923.55 : x
  2. Step 2: Convert to fraction form
    33,991.01/50,978.80 = 12,923.55/x
  3. Step 3: Cross multiply
    33,991.01x = 50,978.80 × 12,923.55
  4. Step 4: Simplify right side
    33,991.01x = 658,827,086.89
  5. Step 5: Solve for x
    x = 658,827,086.89/33,991.01
  6. Step 6: Final answer
    x = 19,382.39

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Why These Related Problems?

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