Home / 13,976.42-20,968.12-4,115.68

Finding the Fourth Proportional to 13,976.42, 20,968.12 and 4,115.68

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Solution

The fourth proportional to 13,976.42, 20,968.12 and 4,115.68 is: 6,174.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,976.42 : 20,968.12 = 4,115.68 : x
  2. Step 2: Convert to fraction form
    13,976.42/20,968.12 = 4,115.68/x
  3. Step 3: Cross multiply
    13,976.42x = 20,968.12 × 4,115.68
  4. Step 4: Simplify right side
    13,976.42x = 86,298,072.12
  5. Step 5: Solve for x
    x = 86,298,072.12/13,976.42
  6. Step 6: Final answer
    x = 6,174.55

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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.