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Finding the Fourth Proportional to 13.37, 20.12 and 10.19

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Solution

The fourth proportional to 13.37, 20.12 and 10.19 is: 15.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13.37 : 20.12 = 10.19 : x
  2. Step 2: Convert to fraction form
    13.37/20.12 = 10.19/x
  3. Step 3: Cross multiply
    13.37x = 20.12 × 10.19
  4. Step 4: Simplify right side
    13.37x = 205.02
  5. Step 5: Solve for x
    x = 205.02/13.37
  6. Step 6: Final answer
    x = 15.34

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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.