Home / 20,074.21-27,702.62-11,121.85

Finding the Fourth Proportional to 20,074.21, 27,702.62 and 11,121.85

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Solution

The fourth proportional to 20,074.21, 27,702.62 and 11,121.85 is: 15,348.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,074.21 : 27,702.62 = 11,121.85 : x
  2. Step 2: Convert to fraction form
    20,074.21/27,702.62 = 11,121.85/x
  3. Step 3: Cross multiply
    20,074.21x = 27,702.62 × 11,121.85
  4. Step 4: Simplify right side
    20,074.21x = 308,104,384.25
  5. Step 5: Solve for x
    x = 308,104,384.25/20,074.21
  6. Step 6: Final answer
    x = 15,348.27

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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.