Home / 12,918.76-19,375.92-3,556.70

Finding the Fourth Proportional to 12,918.76, 19,375.92 and 3,556.70

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Solution

The fourth proportional to 12,918.76, 19,375.92 and 3,556.70 is: 5,334.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.76 : 19,375.92 = 3,556.70 : x
  2. Step 2: Convert to fraction form
    12,918.76/19,375.92 = 3,556.70/x
  3. Step 3: Cross multiply
    12,918.76x = 19,375.92 × 3,556.70
  4. Step 4: Simplify right side
    12,918.76x = 68,914,334.66
  5. Step 5: Solve for x
    x = 68,914,334.66/12,918.76
  6. Step 6: Final answer
    x = 5,334.44

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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.