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Finding the Fourth Proportional to 18,361.89, 27,522.18 and 7,840.80

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Solution

The fourth proportional to 18,361.89, 27,522.18 and 7,840.80 is: 11,752.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,361.89 : 27,522.18 = 7,840.80 : x
  2. Step 2: Convert to fraction form
    18,361.89/27,522.18 = 7,840.80/x
  3. Step 3: Cross multiply
    18,361.89x = 27,522.18 × 7,840.80
  4. Step 4: Simplify right side
    18,361.89x = 215,795,908.94
  5. Step 5: Solve for x
    x = 215,795,908.94/18,361.89
  6. Step 6: Final answer
    x = 11,752.38

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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.