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Finding the Fourth Proportional to 11.94, 18 and 10.56

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Solution

The fourth proportional to 11.94, 18 and 10.56 is: 15.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11.94 : 18 = 10.56 : x
  2. Step 2: Convert to fraction form
    11.94/18 = 10.56/x
  3. Step 3: Cross multiply
    11.94x = 18 × 10.56
  4. Step 4: Simplify right side
    11.94x = 190.08
  5. Step 5: Solve for x
    x = 190.08/11.94
  6. Step 6: Final answer
    x = 15.92

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 (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.