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Finding the Fourth Proportional to 18,469.88, 27,705.38 and 5,989.56

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Solution

The fourth proportional to 18,469.88, 27,705.38 and 5,989.56 is: 8,984.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,469.88 : 27,705.38 = 5,989.56 : x
  2. Step 2: Convert to fraction form
    18,469.88/27,705.38 = 5,989.56/x
  3. Step 3: Cross multiply
    18,469.88x = 27,705.38 × 5,989.56
  4. Step 4: Simplify right side
    18,469.88x = 165,943,035.83
  5. Step 5: Solve for x
    x = 165,943,035.83/18,469.88
  6. Step 6: Final answer
    x = 8,984.52

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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.