Home / 11,987.38-17,989.18-4,196.26

Finding the Fourth Proportional to 11,987.38, 17,989.18 and 4,196.26

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Solution

The fourth proportional to 11,987.38, 17,989.18 and 4,196.26 is: 6,297.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.38 : 17,989.18 = 4,196.26 : x
  2. Step 2: Convert to fraction form
    11,987.38/17,989.18 = 4,196.26/x
  3. Step 3: Cross multiply
    11,987.38x = 17,989.18 × 4,196.26
  4. Step 4: Simplify right side
    11,987.38x = 75,487,276.47
  5. Step 5: Solve for x
    x = 75,487,276.47/11,987.38
  6. Step 6: Final answer
    x = 6,297.23

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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.