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Finding the Fourth Proportional to 12,067.60, 18,117.60 and 7,704.40

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Solution

The fourth proportional to 12,067.60, 18,117.60 and 7,704.40 is: 11,566.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,067.60 : 18,117.60 = 7,704.40 : x
  2. Step 2: Convert to fraction form
    12,067.60/18,117.60 = 7,704.40/x
  3. Step 3: Cross multiply
    12,067.60x = 18,117.60 × 7,704.40
  4. Step 4: Simplify right side
    12,067.60x = 139,585,237.44
  5. Step 5: Solve for x
    x = 139,585,237.44/12,067.60
  6. Step 6: Final answer
    x = 11,566.94

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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.