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Finding the Fourth Proportional to 26.93, 37.16 and 15.86

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Solution

The fourth proportional to 26.93, 37.16 and 15.86 is: 21.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    26.93 : 37.16 = 15.86 : x
  2. Step 2: Convert to fraction form
    26.93/37.16 = 15.86/x
  3. Step 3: Cross multiply
    26.93x = 37.16 × 15.86
  4. Step 4: Simplify right side
    26.93x = 589.48
  5. Step 5: Solve for x
    x = 589.48/26.93
  6. Step 6: Final answer
    x = 21.89

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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.