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Finding the Fourth Proportional to 23.50, 32.41 and 15.31

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Solution

The fourth proportional to 23.50, 32.41 and 15.31 is: 21.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    23.50 : 32.41 = 15.31 : x
  2. Step 2: Convert to fraction form
    23.50/32.41 = 15.31/x
  3. Step 3: Cross multiply
    23.50x = 32.41 × 15.31
  4. Step 4: Simplify right side
    23.50x = 496.20
  5. Step 5: Solve for x
    x = 496.20/23.50
  6. Step 6: Final answer
    x = 21.11

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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.