Home / 11,939.36-17,912.61-4,819.93

Finding the Fourth Proportional to 11,939.36, 17,912.61 and 4,819.93

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Solution

The fourth proportional to 11,939.36, 17,912.61 and 4,819.93 is: 7,231.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.36 : 17,912.61 = 4,819.93 : x
  2. Step 2: Convert to fraction form
    11,939.36/17,912.61 = 4,819.93/x
  3. Step 3: Cross multiply
    11,939.36x = 17,912.61 × 4,819.93
  4. Step 4: Simplify right side
    11,939.36x = 86,337,481.54
  5. Step 5: Solve for x
    x = 86,337,481.54/11,939.36
  6. Step 6: Final answer
    x = 7,231.34

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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.