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Finding the Fourth Proportional to 12,169.96, 16,809.08 and 8,648.44

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Solution

The fourth proportional to 12,169.96, 16,809.08 and 8,648.44 is: 11,945.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,169.96 : 16,809.08 = 8,648.44 : x
  2. Step 2: Convert to fraction form
    12,169.96/16,809.08 = 8,648.44/x
  3. Step 3: Cross multiply
    12,169.96x = 16,809.08 × 8,648.44
  4. Step 4: Simplify right side
    12,169.96x = 145,372,319.84
  5. Step 5: Solve for x
    x = 145,372,319.84/12,169.96
  6. Step 6: Final answer
    x = 11,945.18

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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.