Home / 12,640.90-17,433.94-9,491.62

Finding the Fourth Proportional to 12,640.90, 17,433.94 and 9,491.62

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Solution

The fourth proportional to 12,640.90, 17,433.94 and 9,491.62 is: 13,090.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,640.90 : 17,433.94 = 9,491.62 : x
  2. Step 2: Convert to fraction form
    12,640.90/17,433.94 = 9,491.62/x
  3. Step 3: Cross multiply
    12,640.90x = 17,433.94 × 9,491.62
  4. Step 4: Simplify right side
    12,640.90x = 165,476,198.96
  5. Step 5: Solve for x
    x = 165,476,198.96/12,640.90
  6. Step 6: Final answer
    x = 13,090.54

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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.