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Finding the Fourth Proportional to 11, 16.47 and 10.52

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Solution

The fourth proportional to 11, 16.47 and 10.52 is: 15.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11 : 16.47 = 10.52 : x
  2. Step 2: Convert to fraction form
    11/16.47 = 10.52/x
  3. Step 3: Cross multiply
    11x = 16.47 × 10.52
  4. Step 4: Simplify right side
    11x = 173.26
  5. Step 5: Solve for x
    x = 173.26/11
  6. Step 6: Final answer
    x = 15.75

Related Problems

Find fourth proportional to 5.50, 8.24 and 5.26
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Double scale
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Similar ratio
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1.5x scale

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.