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Finding the Fourth Proportional to 24.86, 37.31 and 15.86

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Solution

The fourth proportional to 24.86, 37.31 and 15.86 is: 23.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    24.86 : 37.31 = 15.86 : x
  2. Step 2: Convert to fraction form
    24.86/37.31 = 15.86/x
  3. Step 3: Cross multiply
    24.86x = 37.31 × 15.86
  4. Step 4: Simplify right side
    24.86x = 591.47
  5. Step 5: Solve for x
    x = 591.47/24.86
  6. Step 6: Final answer
    x = 23.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.