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Finding the Fourth Proportional to 15,180.84, 20,949.74 and 8,467.05

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Solution

The fourth proportional to 15,180.84, 20,949.74 and 8,467.05 is: 11,684.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,180.84 : 20,949.74 = 8,467.05 : x
  2. Step 2: Convert to fraction form
    15,180.84/20,949.74 = 8,467.05/x
  3. Step 3: Cross multiply
    15,180.84x = 20,949.74 × 8,467.05
  4. Step 4: Simplify right side
    15,180.84x = 177,382,453.73
  5. Step 5: Solve for x
    x = 177,382,453.73/15,180.84
  6. Step 6: Final answer
    x = 11,684.63

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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.