Home / 11,829.78-17,740.26-3,930.18

Finding the Fourth Proportional to 11,829.78, 17,740.26 and 3,930.18

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Solution

The fourth proportional to 11,829.78, 17,740.26 and 3,930.18 is: 5,893.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,829.78 : 17,740.26 = 3,930.18 : x
  2. Step 2: Convert to fraction form
    11,829.78/17,740.26 = 3,930.18/x
  3. Step 3: Cross multiply
    11,829.78x = 17,740.26 × 3,930.18
  4. Step 4: Simplify right side
    11,829.78x = 69,722,415.05
  5. Step 5: Solve for x
    x = 69,722,415.05/11,829.78
  6. Step 6: Final answer
    x = 5,893.80

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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.