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Finding the Fourth Proportional to 24, 33.08 and 20.76

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Solution

The fourth proportional to 24, 33.08 and 20.76 is: 28.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    24 : 33.08 = 20.76 : x
  2. Step 2: Convert to fraction form
    24/33.08 = 20.76/x
  3. Step 3: Cross multiply
    24x = 33.08 × 20.76
  4. Step 4: Simplify right side
    24x = 686.74
  5. Step 5: Solve for x
    x = 686.74/24
  6. Step 6: Final answer
    x = 28.61

Related Problems

Find fourth proportional to 12, 16.54 and 10.38
Half scale
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Double scale
Find fourth proportional to 25, 34.46 and 21.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.