Home / 18,112.20-27,170-6,422.64

Finding the Fourth Proportional to 18,112.20, 27,170 and 6,422.64

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Solution

The fourth proportional to 18,112.20, 27,170 and 6,422.64 is: 9,634.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,112.20 : 27,170 = 6,422.64 : x
  2. Step 2: Convert to fraction form
    18,112.20/27,170 = 6,422.64/x
  3. Step 3: Cross multiply
    18,112.20x = 27,170 × 6,422.64
  4. Step 4: Simplify right side
    18,112.20x = 174,503,128.80
  5. Step 5: Solve for x
    x = 174,503,128.80/18,112.20
  6. Step 6: Final answer
    x = 9,634.56

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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.