Home / 11,982.19-17,981.45-6,142.90

Finding the Fourth Proportional to 11,982.19, 17,981.45 and 6,142.90

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Solution

The fourth proportional to 11,982.19, 17,981.45 and 6,142.90 is: 9,218.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,982.19 : 17,981.45 = 6,142.90 : x
  2. Step 2: Convert to fraction form
    11,982.19/17,981.45 = 6,142.90/x
  3. Step 3: Cross multiply
    11,982.19x = 17,981.45 × 6,142.90
  4. Step 4: Simplify right side
    11,982.19x = 110,458,249.21
  5. Step 5: Solve for x
    x = 110,458,249.21/11,982.19
  6. Step 6: Final answer
    x = 9,218.54

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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.