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Finding the Fourth Proportional to 18,611.15, 27,940.41 and 12,064.73

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Solution

The fourth proportional to 18,611.15, 27,940.41 and 12,064.73 is: 18,112.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.15 : 27,940.41 = 12,064.73 : x
  2. Step 2: Convert to fraction form
    18,611.15/27,940.41 = 12,064.73/x
  3. Step 3: Cross multiply
    18,611.15x = 27,940.41 × 12,064.73
  4. Step 4: Simplify right side
    18,611.15x = 337,093,363.04
  5. Step 5: Solve for x
    x = 337,093,363.04/18,611.15
  6. Step 6: Final answer
    x = 18,112.45

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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.