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Finding the Fourth Proportional to 18,859.80, 28,283.82 and 6,850.44

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Solution

The fourth proportional to 18,859.80, 28,283.82 and 6,850.44 is: 10,273.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,859.80 : 28,283.82 = 6,850.44 : x
  2. Step 2: Convert to fraction form
    18,859.80/28,283.82 = 6,850.44/x
  3. Step 3: Cross multiply
    18,859.80x = 28,283.82 × 6,850.44
  4. Step 4: Simplify right side
    18,859.80x = 193,756,611.88
  5. Step 5: Solve for x
    x = 193,756,611.88/18,859.80
  6. Step 6: Final answer
    x = 10,273.52

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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.