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Finding the Fourth Proportional to 12,640.44, 18,935.29 and 6,296.21

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Solution

The fourth proportional to 12,640.44, 18,935.29 and 6,296.21 is: 9,431.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,640.44 : 18,935.29 = 6,296.21 : x
  2. Step 2: Convert to fraction form
    12,640.44/18,935.29 = 6,296.21/x
  3. Step 3: Cross multiply
    12,640.44x = 18,935.29 × 6,296.21
  4. Step 4: Simplify right side
    12,640.44x = 119,220,562.25
  5. Step 5: Solve for x
    x = 119,220,562.25/12,640.44
  6. Step 6: Final answer
    x = 9,431.68

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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.