Home / 20,519.43-30,836.85-12,200.94

Finding the Fourth Proportional to 20,519.43, 30,836.85 and 12,200.94

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Solution

The fourth proportional to 20,519.43, 30,836.85 and 12,200.94 is: 18,335.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,519.43 : 30,836.85 = 12,200.94 : x
  2. Step 2: Convert to fraction form
    20,519.43/30,836.85 = 12,200.94/x
  3. Step 3: Cross multiply
    20,519.43x = 30,836.85 × 12,200.94
  4. Step 4: Simplify right side
    20,519.43x = 376,238,556.64
  5. Step 5: Solve for x
    x = 376,238,556.64/20,519.43
  6. Step 6: Final answer
    x = 18,335.72

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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.