Home / 11,945.62-16,481.10-6,639.41

Finding the Fourth Proportional to 11,945.62, 16,481.10 and 6,639.41

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Solution

The fourth proportional to 11,945.62, 16,481.10 and 6,639.41 is: 9,160.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,945.62 : 16,481.10 = 6,639.41 : x
  2. Step 2: Convert to fraction form
    11,945.62/16,481.10 = 6,639.41/x
  3. Step 3: Cross multiply
    11,945.62x = 16,481.10 × 6,639.41
  4. Step 4: Simplify right side
    11,945.62x = 109,424,837.95
  5. Step 5: Solve for x
    x = 109,424,837.95/11,945.62
  6. Step 6: Final answer
    x = 9,160.25

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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.