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Finding the Fourth Proportional to 14.81, 22.29 and 13.91

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Solution

The fourth proportional to 14.81, 22.29 and 13.91 is: 20.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.81 : 22.29 = 13.91 : x
  2. Step 2: Convert to fraction form
    14.81/22.29 = 13.91/x
  3. Step 3: Cross multiply
    14.81x = 22.29 × 13.91
  4. Step 4: Simplify right side
    14.81x = 309.94
  5. Step 5: Solve for x
    x = 309.94/14.81
  6. Step 6: Final answer
    x = 20.93

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Why These Related Problems?

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