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Finding the Fourth Proportional to 13.01, 19.50 and 11.28

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Solution

The fourth proportional to 13.01, 19.50 and 11.28 is: 16.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13.01 : 19.50 = 11.28 : x
  2. Step 2: Convert to fraction form
    13.01/19.50 = 11.28/x
  3. Step 3: Cross multiply
    13.01x = 19.50 × 11.28
  4. Step 4: Simplify right side
    13.01x = 219.93
  5. Step 5: Solve for x
    x = 219.93/13.01
  6. Step 6: Final answer
    x = 16.91

Related Problems

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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.