Home / 11,979.30-17,967.58-3,213.54

Finding the Fourth Proportional to 11,979.30, 17,967.58 and 3,213.54

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Solution

The fourth proportional to 11,979.30, 17,967.58 and 3,213.54 is: 4,819.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.30 : 17,967.58 = 3,213.54 : x
  2. Step 2: Convert to fraction form
    11,979.30/17,967.58 = 3,213.54/x
  3. Step 3: Cross multiply
    11,979.30x = 17,967.58 × 3,213.54
  4. Step 4: Simplify right side
    11,979.30x = 57,739,537.03
  5. Step 5: Solve for x
    x = 57,739,537.03/11,979.30
  6. Step 6: Final answer
    x = 4,819.94

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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.