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Finding the Fourth Proportional to 12,422.87, 17,143.88 and 6,757.94

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Solution

The fourth proportional to 12,422.87, 17,143.88 and 6,757.94 is: 9,326.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,422.87 : 17,143.88 = 6,757.94 : x
  2. Step 2: Convert to fraction form
    12,422.87/17,143.88 = 6,757.94/x
  3. Step 3: Cross multiply
    12,422.87x = 17,143.88 × 6,757.94
  4. Step 4: Simplify right side
    12,422.87x = 115,857,312.41
  5. Step 5: Solve for x
    x = 115,857,312.41/12,422.87
  6. Step 6: Final answer
    x = 9,326.13

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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.