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Finding the Fourth Proportional to 20,169.78, 30,236.22 and 8,483.82

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Solution

The fourth proportional to 20,169.78, 30,236.22 and 8,483.82 is: 12,717.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.78 : 30,236.22 = 8,483.82 : x
  2. Step 2: Convert to fraction form
    20,169.78/30,236.22 = 8,483.82/x
  3. Step 3: Cross multiply
    20,169.78x = 30,236.22 × 8,483.82
  4. Step 4: Simplify right side
    20,169.78x = 256,518,647.96
  5. Step 5: Solve for x
    x = 256,518,647.96/20,169.78
  6. Step 6: Final answer
    x = 12,717.97

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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.