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Finding the Fourth Proportional to 17.63, 24.34 and 13.31

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Solution

The fourth proportional to 17.63, 24.34 and 13.31 is: 18.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.63 : 24.34 = 13.31 : x
  2. Step 2: Convert to fraction form
    17.63/24.34 = 13.31/x
  3. Step 3: Cross multiply
    17.63x = 24.34 × 13.31
  4. Step 4: Simplify right side
    17.63x = 323.84
  5. Step 5: Solve for x
    x = 323.84/17.63
  6. Step 6: Final answer
    x = 18.37

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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.