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Finding the Fourth Proportional to 18,361.55, 27,538.68 and 8,997.54

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Solution

The fourth proportional to 18,361.55, 27,538.68 and 8,997.54 is: 13,494.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,361.55 : 27,538.68 = 8,997.54 : x
  2. Step 2: Convert to fraction form
    18,361.55/27,538.68 = 8,997.54/x
  3. Step 3: Cross multiply
    18,361.55x = 27,538.68 × 8,997.54
  4. Step 4: Simplify right side
    18,361.55x = 247,780,374.85
  5. Step 5: Solve for x
    x = 247,780,374.85/18,361.55
  6. Step 6: Final answer
    x = 13,494.53

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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.