Home / 12,942.78-19,394.87-6,694.44

Finding the Fourth Proportional to 12,942.78, 19,394.87 and 6,694.44

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Solution

The fourth proportional to 12,942.78, 19,394.87 and 6,694.44 is: 10,031.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942.78 : 19,394.87 = 6,694.44 : x
  2. Step 2: Convert to fraction form
    12,942.78/19,394.87 = 6,694.44/x
  3. Step 3: Cross multiply
    12,942.78x = 19,394.87 × 6,694.44
  4. Step 4: Simplify right side
    12,942.78x = 129,837,793.52
  5. Step 5: Solve for x
    x = 129,837,793.52/12,942.78
  6. Step 6: Final answer
    x = 10,031.68

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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.