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Finding the Fourth Proportional to 17.63, 24.31 and 13.98

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Solution

The fourth proportional to 17.63, 24.31 and 13.98 is: 19.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.63 : 24.31 = 13.98 : x
  2. Step 2: Convert to fraction form
    17.63/24.31 = 13.98/x
  3. Step 3: Cross multiply
    17.63x = 24.31 × 13.98
  4. Step 4: Simplify right side
    17.63x = 339.85
  5. Step 5: Solve for x
    x = 339.85/17.63
  6. Step 6: Final answer
    x = 19.28

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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.