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Finding the Fourth Proportional to 18,270.39, 27,404.99 and 7,737.60

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Solution

The fourth proportional to 18,270.39, 27,404.99 and 7,737.60 is: 11,606.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270.39 : 27,404.99 = 7,737.60 : x
  2. Step 2: Convert to fraction form
    18,270.39/27,404.99 = 7,737.60/x
  3. Step 3: Cross multiply
    18,270.39x = 27,404.99 × 7,737.60
  4. Step 4: Simplify right side
    18,270.39x = 212,048,850.62
  5. Step 5: Solve for x
    x = 212,048,850.62/18,270.39
  6. Step 6: Final answer
    x = 11,606.15

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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.