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Finding the Fourth Proportional to 17,107.75, 25,640.55 and 12,150.55

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Solution

The fourth proportional to 17,107.75, 25,640.55 and 12,150.55 is: 18,210.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,107.75 : 25,640.55 = 12,150.55 : x
  2. Step 2: Convert to fraction form
    17,107.75/25,640.55 = 12,150.55/x
  3. Step 3: Cross multiply
    17,107.75x = 25,640.55 × 12,150.55
  4. Step 4: Simplify right side
    17,107.75x = 311,546,784.80
  5. Step 5: Solve for x
    x = 311,546,784.80/17,107.75
  6. Step 6: Final answer
    x = 18,210.86

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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.