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Finding the Fourth Proportional to 12,722.60, 19,067.48 and 5,697.48

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Solution

The fourth proportional to 12,722.60, 19,067.48 and 5,697.48 is: 8,538.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,722.60 : 19,067.48 = 5,697.48 : x
  2. Step 2: Convert to fraction form
    12,722.60/19,067.48 = 5,697.48/x
  3. Step 3: Cross multiply
    12,722.60x = 19,067.48 × 5,697.48
  4. Step 4: Simplify right side
    12,722.60x = 108,636,585.95
  5. Step 5: Solve for x
    x = 108,636,585.95/12,722.60
  6. Step 6: Final answer
    x = 8,538.87

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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.