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Finding the Fourth Proportional to 15,025.94, 20,735.16 and 8,311.14

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Solution

The fourth proportional to 15,025.94, 20,735.16 and 8,311.14 is: 11,469.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,025.94 : 20,735.16 = 8,311.14 : x
  2. Step 2: Convert to fraction form
    15,025.94/20,735.16 = 8,311.14/x
  3. Step 3: Cross multiply
    15,025.94x = 20,735.16 × 8,311.14
  4. Step 4: Simplify right side
    15,025.94x = 172,332,817.68
  5. Step 5: Solve for x
    x = 172,332,817.68/15,025.94
  6. Step 6: Final answer
    x = 11,469.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.