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Finding the Fourth Proportional to 12,067.80, 18,077.40 and 8,374.20

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Solution

The fourth proportional to 12,067.80, 18,077.40 and 8,374.20 is: 12,544.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,067.80 : 18,077.40 = 8,374.20 : x
  2. Step 2: Convert to fraction form
    12,067.80/18,077.40 = 8,374.20/x
  3. Step 3: Cross multiply
    12,067.80x = 18,077.40 × 8,374.20
  4. Step 4: Simplify right side
    12,067.80x = 151,383,763.08
  5. Step 5: Solve for x
    x = 151,383,763.08/12,067.80
  6. Step 6: Final answer
    x = 12,544.44

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1.5x scale

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.