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Finding the Fourth Proportional to 12,195.39, 16,829.05 and 6,818.07

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Solution

The fourth proportional to 12,195.39, 16,829.05 and 6,818.07 is: 9,408.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,195.39 : 16,829.05 = 6,818.07 : x
  2. Step 2: Convert to fraction form
    12,195.39/16,829.05 = 6,818.07/x
  3. Step 3: Cross multiply
    12,195.39x = 16,829.05 × 6,818.07
  4. Step 4: Simplify right side
    12,195.39x = 114,741,640.93
  5. Step 5: Solve for x
    x = 114,741,640.93/12,195.39
  6. Step 6: Final answer
    x = 9,408.61

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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.