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Finding the Fourth Proportional to 15.44, 21.32 and 11.37

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Solution

The fourth proportional to 15.44, 21.32 and 11.37 is: 15.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15.44 : 21.32 = 11.37 : x
  2. Step 2: Convert to fraction form
    15.44/21.32 = 11.37/x
  3. Step 3: Cross multiply
    15.44x = 21.32 × 11.37
  4. Step 4: Simplify right side
    15.44x = 242.35
  5. Step 5: Solve for x
    x = 242.35/15.44
  6. Step 6: Final answer
    x = 15.70

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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.