Home / 11,936.70-17,905.20-3,171.56

Finding the Fourth Proportional to 11,936.70, 17,905.20 and 3,171.56

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Solution

The fourth proportional to 11,936.70, 17,905.20 and 3,171.56 is: 4,757.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,936.70 : 17,905.20 = 3,171.56 : x
  2. Step 2: Convert to fraction form
    11,936.70/17,905.20 = 3,171.56/x
  3. Step 3: Cross multiply
    11,936.70x = 17,905.20 × 3,171.56
  4. Step 4: Simplify right side
    11,936.70x = 56,787,416.11
  5. Step 5: Solve for x
    x = 56,787,416.11/11,936.70
  6. Step 6: Final answer
    x = 4,757.38

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1.5x scale

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.