Home / 20,794.06-28,698.51-11,839.78

Finding the Fourth Proportional to 20,794.06, 28,698.51 and 11,839.78

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Solution

The fourth proportional to 20,794.06, 28,698.51 and 11,839.78 is: 16,340.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,794.06 : 28,698.51 = 11,839.78 : x
  2. Step 2: Convert to fraction form
    20,794.06/28,698.51 = 11,839.78/x
  3. Step 3: Cross multiply
    20,794.06x = 28,698.51 × 11,839.78
  4. Step 4: Simplify right side
    20,794.06x = 339,784,044.73
  5. Step 5: Solve for x
    x = 339,784,044.73/20,794.06
  6. Step 6: Final answer
    x = 16,340.44

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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.