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Finding the Fourth Proportional to 13,469.09, 20,206.81 and 4,235.09

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Solution

The fourth proportional to 13,469.09, 20,206.81 and 4,235.09 is: 6,353.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,469.09 : 20,206.81 = 4,235.09 : x
  2. Step 2: Convert to fraction form
    13,469.09/20,206.81 = 4,235.09/x
  3. Step 3: Cross multiply
    13,469.09x = 20,206.81 × 4,235.09
  4. Step 4: Simplify right side
    13,469.09x = 85,577,658.96
  5. Step 5: Solve for x
    x = 85,577,658.96/13,469.09
  6. Step 6: Final answer
    x = 6,353.63

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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.