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Finding the Fourth Proportional to 23.88, 32.97 and 19.81

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Solution

The fourth proportional to 23.88, 32.97 and 19.81 is: 27.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    23.88 : 32.97 = 19.81 : x
  2. Step 2: Convert to fraction form
    23.88/32.97 = 19.81/x
  3. Step 3: Cross multiply
    23.88x = 32.97 × 19.81
  4. Step 4: Simplify right side
    23.88x = 653.14
  5. Step 5: Solve for x
    x = 653.14/23.88
  6. Step 6: Final answer
    x = 27.35

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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.