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Finding the Fourth Proportional to 12,172.91, 16,794.11 and 8,993.87

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Solution

The fourth proportional to 12,172.91, 16,794.11 and 8,993.87 is: 12,408.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,172.91 : 16,794.11 = 8,993.87 : x
  2. Step 2: Convert to fraction form
    12,172.91/16,794.11 = 8,993.87/x
  3. Step 3: Cross multiply
    12,172.91x = 16,794.11 × 8,993.87
  4. Step 4: Simplify right side
    12,172.91x = 151,043,913.17
  5. Step 5: Solve for x
    x = 151,043,913.17/12,172.91
  6. Step 6: Final answer
    x = 12,408.21

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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.