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Finding the Fourth Proportional to 16,809.87, 25,218.43 and 8,380.97

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Solution

The fourth proportional to 16,809.87, 25,218.43 and 8,380.97 is: 12,573.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,809.87 : 25,218.43 = 8,380.97 : x
  2. Step 2: Convert to fraction form
    16,809.87/25,218.43 = 8,380.97/x
  3. Step 3: Cross multiply
    16,809.87x = 25,218.43 × 8,380.97
  4. Step 4: Simplify right side
    16,809.87x = 211,354,852.80
  5. Step 5: Solve for x
    x = 211,354,852.80/16,809.87
  6. Step 6: Final answer
    x = 12,573.26

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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.