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Finding the Third Proportional to 9,143.63 and 12,255.75

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Solution

The third proportional to 9,143.63 and 12,255.75 is: 16,427.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,143.63 : 12,255.75 = 12,255.75 : x
  2. Step 2: Convert to fraction form
    9,143.63/12,255.75 = 12,255.75/x
  3. Step 3: Cross multiply
    9,143.63x = 12,255.75 × 12,255.75
  4. Step 4: Simplify right side
    9,143.63x = 150,203,408.06
  5. Step 5: Solve for x
    x = 150,203,408.06/9,143.63
  6. Step 6: Final answer
    x = 16,427.12

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.