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Finding the Fourth Proportional to 20.06, 30.10 and 14.06

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Solution

The fourth proportional to 20.06, 30.10 and 14.06 is: 21.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20.06 : 30.10 = 14.06 : x
  2. Step 2: Convert to fraction form
    20.06/30.10 = 14.06/x
  3. Step 3: Cross multiply
    20.06x = 30.10 × 14.06
  4. Step 4: Simplify right side
    20.06x = 423.21
  5. Step 5: Solve for x
    x = 423.21/20.06
  6. Step 6: Final answer
    x = 21.10

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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.