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Finding the Fourth Proportional to 11.11, 15.26 and 10.91

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Solution

The fourth proportional to 11.11, 15.26 and 10.91 is: 14.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11.11 : 15.26 = 10.91 : x
  2. Step 2: Convert to fraction form
    11.11/15.26 = 10.91/x
  3. Step 3: Cross multiply
    11.11x = 15.26 × 10.91
  4. Step 4: Simplify right side
    11.11x = 166.49
  5. Step 5: Solve for x
    x = 166.49/11.11
  6. Step 6: Final answer
    x = 14.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.