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Finding the Fourth Proportional to 12,227.63, 16,874.15 and 6,638.63

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Solution

The fourth proportional to 12,227.63, 16,874.15 and 6,638.63 is: 9,161.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,227.63 : 16,874.15 = 6,638.63 : x
  2. Step 2: Convert to fraction form
    12,227.63/16,874.15 = 6,638.63/x
  3. Step 3: Cross multiply
    12,227.63x = 16,874.15 × 6,638.63
  4. Step 4: Simplify right side
    12,227.63x = 112,021,120.85
  5. Step 5: Solve for x
    x = 112,021,120.85/12,227.63
  6. Step 6: Final answer
    x = 9,161.31

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Half scale
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Double scale
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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.