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Finding the Fourth Proportional to 12,626.20, 18,890.70 and 8,252.20

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Solution

The fourth proportional to 12,626.20, 18,890.70 and 8,252.20 is: 12,346.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,626.20 : 18,890.70 = 8,252.20 : x
  2. Step 2: Convert to fraction form
    12,626.20/18,890.70 = 8,252.20/x
  3. Step 3: Cross multiply
    12,626.20x = 18,890.70 × 8,252.20
  4. Step 4: Simplify right side
    12,626.20x = 155,889,834.54
  5. Step 5: Solve for x
    x = 155,889,834.54/12,626.20
  6. Step 6: Final answer
    x = 12,346.54

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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.