Home / 20,792.97-28,694.27-11,840.47

Finding the Fourth Proportional to 20,792.97, 28,694.27 and 11,840.47

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Solution

The fourth proportional to 20,792.97, 28,694.27 and 11,840.47 is: 16,339.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.97 : 28,694.27 = 11,840.47 : x
  2. Step 2: Convert to fraction form
    20,792.97/28,694.27 = 11,840.47/x
  3. Step 3: Cross multiply
    20,792.97x = 28,694.27 × 11,840.47
  4. Step 4: Simplify right side
    20,792.97x = 339,753,655.64
  5. Step 5: Solve for x
    x = 339,753,655.64/20,792.97
  6. Step 6: Final answer
    x = 16,339.83

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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.