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Finding the Fourth Proportional to 12,655.17, 18,983.03 and 4,344.75

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Solution

The fourth proportional to 12,655.17, 18,983.03 and 4,344.75 is: 6,517.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.17 : 18,983.03 = 4,344.75 : x
  2. Step 2: Convert to fraction form
    12,655.17/18,983.03 = 4,344.75/x
  3. Step 3: Cross multiply
    12,655.17x = 18,983.03 × 4,344.75
  4. Step 4: Simplify right side
    12,655.17x = 82,476,497.87
  5. Step 5: Solve for x
    x = 82,476,497.87/12,655.17
  6. Step 6: Final answer
    x = 6,517.22

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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.