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Finding the Third Proportional to 9,291 and 13,690.50

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Solution

The third proportional to 9,291 and 13,690.50 is: 20,173.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,291 : 13,690.50 = 13,690.50 : x
  2. Step 2: Convert to fraction form
    9,291/13,690.50 = 13,690.50/x
  3. Step 3: Cross multiply
    9,291x = 13,690.50 × 13,690.50
  4. Step 4: Simplify right side
    9,291x = 187,429,790.25
  5. Step 5: Solve for x
    x = 187,429,790.25/9,291
  6. Step 6: Final answer
    x = 20,173.26

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.