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Finding the Fourth Proportional to 18,091.10, 27,140.70 and 5,611.70

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Solution

The fourth proportional to 18,091.10, 27,140.70 and 5,611.70 is: 8,418.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,091.10 : 27,140.70 = 5,611.70 : x
  2. Step 2: Convert to fraction form
    18,091.10/27,140.70 = 5,611.70/x
  3. Step 3: Cross multiply
    18,091.10x = 27,140.70 × 5,611.70
  4. Step 4: Simplify right side
    18,091.10x = 152,305,466.19
  5. Step 5: Solve for x
    x = 152,305,466.19/18,091.10
  6. Step 6: Final answer
    x = 8,418.81

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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.