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Finding the Fourth Proportional to 11,959.66, 17,940.41 and 3,640.39

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Solution

The fourth proportional to 11,959.66, 17,940.41 and 3,640.39 is: 5,460.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,959.66 : 17,940.41 = 3,640.39 : x
  2. Step 2: Convert to fraction form
    11,959.66/17,940.41 = 3,640.39/x
  3. Step 3: Cross multiply
    11,959.66x = 17,940.41 × 3,640.39
  4. Step 4: Simplify right side
    11,959.66x = 65,310,039.76
  5. Step 5: Solve for x
    x = 65,310,039.76/11,959.66
  6. Step 6: Final answer
    x = 5,460.86

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1.5x scale

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.