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Finding the Fourth Proportional to 20.04, 27.29 and 19.68

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Solution

The fourth proportional to 20.04, 27.29 and 19.68 is: 26.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20.04 : 27.29 = 19.68 : x
  2. Step 2: Convert to fraction form
    20.04/27.29 = 19.68/x
  3. Step 3: Cross multiply
    20.04x = 27.29 × 19.68
  4. Step 4: Simplify right side
    20.04x = 536.97
  5. Step 5: Solve for x
    x = 536.97/20.04
  6. Step 6: Final answer
    x = 26.79

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.