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Finding the Fourth Proportional to 15.44, 21.32 and 13.01

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Solution

The fourth proportional to 15.44, 21.32 and 13.01 is: 17.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15.44 : 21.32 = 13.01 : x
  2. Step 2: Convert to fraction form
    15.44/21.32 = 13.01/x
  3. Step 3: Cross multiply
    15.44x = 21.32 × 13.01
  4. Step 4: Simplify right side
    15.44x = 277.20
  5. Step 5: Solve for x
    x = 277.20/15.44
  6. Step 6: Final answer
    x = 17.96

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.