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Finding the Fourth Proportional to 12,893.21, 17,793.12 and 7,227.99

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Solution

The fourth proportional to 12,893.21, 17,793.12 and 7,227.99 is: 9,974.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,893.21 : 17,793.12 = 7,227.99 : x
  2. Step 2: Convert to fraction form
    12,893.21/17,793.12 = 7,227.99/x
  3. Step 3: Cross multiply
    12,893.21x = 17,793.12 × 7,227.99
  4. Step 4: Simplify right side
    12,893.21x = 128,608,493.43
  5. Step 5: Solve for x
    x = 128,608,493.43/12,893.21
  6. Step 6: Final answer
    x = 9,974.90

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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.