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Finding the Fourth Proportional to 19,910.66, 27,469.88 and 11,295.90

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Solution

The fourth proportional to 19,910.66, 27,469.88 and 11,295.90 is: 15,584.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,910.66 : 27,469.88 = 11,295.90 : x
  2. Step 2: Convert to fraction form
    19,910.66/27,469.88 = 11,295.90/x
  3. Step 3: Cross multiply
    19,910.66x = 27,469.88 × 11,295.90
  4. Step 4: Simplify right side
    19,910.66x = 310,297,017.49
  5. Step 5: Solve for x
    x = 310,297,017.49/19,910.66
  6. Step 6: Final answer
    x = 15,584.47

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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.