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Finding the Fourth Proportional to 18,671.14, 27,997.88 and 6,816.68

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Solution

The fourth proportional to 18,671.14, 27,997.88 and 6,816.68 is: 10,221.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.14 : 27,997.88 = 6,816.68 : x
  2. Step 2: Convert to fraction form
    18,671.14/27,997.88 = 6,816.68/x
  3. Step 3: Cross multiply
    18,671.14x = 27,997.88 × 6,816.68
  4. Step 4: Simplify right side
    18,671.14x = 190,852,414.57
  5. Step 5: Solve for x
    x = 190,852,414.57/18,671.14
  6. Step 6: Final answer
    x = 10,221.79

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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.