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Finding the Fourth Proportional to 12,367.80, 17,067.78 and 7,063.20

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Solution

The fourth proportional to 12,367.80, 17,067.78 and 7,063.20 is: 9,747.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,367.80 : 17,067.78 = 7,063.20 : x
  2. Step 2: Convert to fraction form
    12,367.80/17,067.78 = 7,063.20/x
  3. Step 3: Cross multiply
    12,367.80x = 17,067.78 × 7,063.20
  4. Step 4: Simplify right side
    12,367.80x = 120,553,143.70
  5. Step 5: Solve for x
    x = 120,553,143.70/12,367.80
  6. Step 6: Final answer
    x = 9,747.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.