Home / 11,936.21-17,902.90-3,171.80

Finding the Fourth Proportional to 11,936.21, 17,902.90 and 3,171.80

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Solution

The fourth proportional to 11,936.21, 17,902.90 and 3,171.80 is: 4,757.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,936.21 : 17,902.90 = 3,171.80 : x
  2. Step 2: Convert to fraction form
    11,936.21/17,902.90 = 3,171.80/x
  3. Step 3: Cross multiply
    11,936.21x = 17,902.90 × 3,171.80
  4. Step 4: Simplify right side
    11,936.21x = 56,784,418.22
  5. Step 5: Solve for x
    x = 56,784,418.22/11,936.21
  6. Step 6: Final answer
    x = 4,757.32

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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.