Home / 20,175.21-27,842.94-11,222.55

Finding the Fourth Proportional to 20,175.21, 27,842.94 and 11,222.55

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Solution

The fourth proportional to 20,175.21, 27,842.94 and 11,222.55 is: 15,487.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,175.21 : 27,842.94 = 11,222.55 : x
  2. Step 2: Convert to fraction form
    20,175.21/27,842.94 = 11,222.55/x
  3. Step 3: Cross multiply
    20,175.21x = 27,842.94 × 11,222.55
  4. Step 4: Simplify right side
    20,175.21x = 312,468,786.30
  5. Step 5: Solve for x
    x = 312,468,786.30/20,175.21
  6. Step 6: Final answer
    x = 15,487.76

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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.