Home / 38,112.78-57,174.70-11,819.64

Finding the Fourth Proportional to 38,112.78, 57,174.70 and 11,819.64

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Solution

The fourth proportional to 38,112.78, 57,174.70 and 11,819.64 is: 17,731.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,112.78 : 57,174.70 = 11,819.64 : x
  2. Step 2: Convert to fraction form
    38,112.78/57,174.70 = 11,819.64/x
  3. Step 3: Cross multiply
    38,112.78x = 57,174.70 × 11,819.64
  4. Step 4: Simplify right side
    38,112.78x = 675,784,371.11
  5. Step 5: Solve for x
    x = 675,784,371.11/38,112.78
  6. Step 6: Final answer
    x = 17,731.17

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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.