Home / 11,961.78-17,942.67-3,196.23

Finding the Fourth Proportional to 11,961.78, 17,942.67 and 3,196.23

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Solution

The fourth proportional to 11,961.78, 17,942.67 and 3,196.23 is: 4,794.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,961.78 : 17,942.67 = 3,196.23 : x
  2. Step 2: Convert to fraction form
    11,961.78/17,942.67 = 3,196.23/x
  3. Step 3: Cross multiply
    11,961.78x = 17,942.67 × 3,196.23
  4. Step 4: Simplify right side
    11,961.78x = 57,348,900.13
  5. Step 5: Solve for x
    x = 57,348,900.13/11,961.78
  6. Step 6: Final answer
    x = 4,794.35

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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.