Home / 11,819.24-17,722.81-3,918.90

Finding the Fourth Proportional to 11,819.24, 17,722.81 and 3,918.90

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Solution

The fourth proportional to 11,819.24, 17,722.81 and 3,918.90 is: 5,876.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,819.24 : 17,722.81 = 3,918.90 : x
  2. Step 2: Convert to fraction form
    11,819.24/17,722.81 = 3,918.90/x
  3. Step 3: Cross multiply
    11,819.24x = 17,722.81 × 3,918.90
  4. Step 4: Simplify right side
    11,819.24x = 69,453,910.31
  5. Step 5: Solve for x
    x = 69,453,910.31/11,819.24
  6. Step 6: Final answer
    x = 5,876.35

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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.