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Finding the Third Proportional to 12,216.45 and 28,781.26

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Solution

The third proportional to 12,216.45 and 28,781.26 is: 67,807.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,216.45 : 28,781.26 = 28,781.26 : x
  2. Step 2: Convert to fraction form
    12,216.45/28,781.26 = 28,781.26/x
  3. Step 3: Cross multiply
    12,216.45x = 28,781.26 × 28,781.26
  4. Step 4: Simplify right side
    12,216.45x = 828,361,026.12
  5. Step 5: Solve for x
    x = 828,361,026.12/12,216.45
  6. Step 6: Final answer
    x = 67,807.04

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.