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Finding the Fourth Proportional to 17,998.73, 27,012.54 and 8,138.87

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Solution

The fourth proportional to 17,998.73, 27,012.54 and 8,138.87 is: 12,214.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,998.73 : 27,012.54 = 8,138.87 : x
  2. Step 2: Convert to fraction form
    17,998.73/27,012.54 = 8,138.87/x
  3. Step 3: Cross multiply
    17,998.73x = 27,012.54 × 8,138.87
  4. Step 4: Simplify right side
    17,998.73x = 219,851,551.43
  5. Step 5: Solve for x
    x = 219,851,551.43/17,998.73
  6. Step 6: Final answer
    x = 12,214.84

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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.