Home / 11,970.78-17,964.39-4,179.60

Finding the Fourth Proportional to 11,970.78, 17,964.39 and 4,179.60

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Solution

The fourth proportional to 11,970.78, 17,964.39 and 4,179.60 is: 6,272.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,970.78 : 17,964.39 = 4,179.60 : x
  2. Step 2: Convert to fraction form
    11,970.78/17,964.39 = 4,179.60/x
  3. Step 3: Cross multiply
    11,970.78x = 17,964.39 × 4,179.60
  4. Step 4: Simplify right side
    11,970.78x = 75,083,964.44
  5. Step 5: Solve for x
    x = 75,083,964.44/11,970.78
  6. Step 6: Final answer
    x = 6,272.27

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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.