Home / 16,906.05-25,328.70-8,121.60

Finding the Fourth Proportional to 16,906.05, 25,328.70 and 8,121.60

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Solution

The fourth proportional to 16,906.05, 25,328.70 and 8,121.60 is: 12,167.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,906.05 : 25,328.70 = 8,121.60 : x
  2. Step 2: Convert to fraction form
    16,906.05/25,328.70 = 8,121.60/x
  3. Step 3: Cross multiply
    16,906.05x = 25,328.70 × 8,121.60
  4. Step 4: Simplify right side
    16,906.05x = 205,709,569.92
  5. Step 5: Solve for x
    x = 205,709,569.92/16,906.05
  6. Step 6: Final answer
    x = 12,167.81

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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.