Home / 12,229.45-16,876.62-6,640.45

Finding the Fourth Proportional to 12,229.45, 16,876.62 and 6,640.45

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Solution

The fourth proportional to 12,229.45, 16,876.62 and 6,640.45 is: 9,163.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,229.45 : 16,876.62 = 6,640.45 : x
  2. Step 2: Convert to fraction form
    12,229.45/16,876.62 = 6,640.45/x
  3. Step 3: Cross multiply
    12,229.45x = 16,876.62 × 6,640.45
  4. Step 4: Simplify right side
    12,229.45x = 112,068,351.28
  5. Step 5: Solve for x
    x = 112,068,351.28/12,229.45
  6. Step 6: Final answer
    x = 9,163.81

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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.