Home / 11,906.62-17,858.49-3,142.20

Finding the Fourth Proportional to 11,906.62, 17,858.49 and 3,142.20

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Solution

The fourth proportional to 11,906.62, 17,858.49 and 3,142.20 is: 4,712.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,906.62 : 17,858.49 = 3,142.20 : x
  2. Step 2: Convert to fraction form
    11,906.62/17,858.49 = 3,142.20/x
  3. Step 3: Cross multiply
    11,906.62x = 17,858.49 × 3,142.20
  4. Step 4: Simplify right side
    11,906.62x = 56,114,857.99
  5. Step 5: Solve for x
    x = 56,114,857.99/11,906.62
  6. Step 6: Final answer
    x = 4,712.91

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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.