Home / 11,987.10-17,979.03-3,222.54

Finding the Fourth Proportional to 11,987.10, 17,979.03 and 3,222.54

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Solution

The fourth proportional to 11,987.10, 17,979.03 and 3,222.54 is: 4,833.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.10 : 17,979.03 = 3,222.54 : x
  2. Step 2: Convert to fraction form
    11,987.10/17,979.03 = 3,222.54/x
  3. Step 3: Cross multiply
    11,987.10x = 17,979.03 × 3,222.54
  4. Step 4: Simplify right side
    11,987.10x = 57,938,143.34
  5. Step 5: Solve for x
    x = 57,938,143.34/11,987.10
  6. Step 6: Final answer
    x = 4,833.37

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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.