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Finding the Fourth Proportional to 20,317.92, 30,476.88 and 8,622.94

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Solution

The fourth proportional to 20,317.92, 30,476.88 and 8,622.94 is: 12,934.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.92 : 30,476.88 = 8,622.94 : x
  2. Step 2: Convert to fraction form
    20,317.92/30,476.88 = 8,622.94/x
  3. Step 3: Cross multiply
    20,317.92x = 30,476.88 × 8,622.94
  4. Step 4: Simplify right side
    20,317.92x = 262,800,231.44
  5. Step 5: Solve for x
    x = 262,800,231.44/20,317.92
  6. Step 6: Final answer
    x = 12,934.41

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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.