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Finding the Fourth Proportional to 11.76, 17.55 and 10.24

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Solution

The fourth proportional to 11.76, 17.55 and 10.24 is: 15.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11.76 : 17.55 = 10.24 : x
  2. Step 2: Convert to fraction form
    11.76/17.55 = 10.24/x
  3. Step 3: Cross multiply
    11.76x = 17.55 × 10.24
  4. Step 4: Simplify right side
    11.76x = 179.77
  5. Step 5: Solve for x
    x = 179.77/11.76
  6. Step 6: Final answer
    x = 15.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.