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Finding the Fourth Proportional to 12.57, 18.93 and 12.44

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Solution

The fourth proportional to 12.57, 18.93 and 12.44 is: 18.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12.57 : 18.93 = 12.44 : x
  2. Step 2: Convert to fraction form
    12.57/18.93 = 12.44/x
  3. Step 3: Cross multiply
    12.57x = 18.93 × 12.44
  4. Step 4: Simplify right side
    12.57x = 235.39
  5. Step 5: Solve for x
    x = 235.39/12.57
  6. Step 6: Final answer
    x = 18.73

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.