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Finding the Fourth Proportional to 12,422.61, 17,143.03 and 6,757.24

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Solution

The fourth proportional to 12,422.61, 17,143.03 and 6,757.24 is: 9,324.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,422.61 : 17,143.03 = 6,757.24 : x
  2. Step 2: Convert to fraction form
    12,422.61/17,143.03 = 6,757.24/x
  3. Step 3: Cross multiply
    12,422.61x = 17,143.03 × 6,757.24
  4. Step 4: Simplify right side
    12,422.61x = 115,839,568.04
  5. Step 5: Solve for x
    x = 115,839,568.04/12,422.61
  6. Step 6: Final answer
    x = 9,324.90

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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.