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Finding the Third Proportional to 12,989 and 28,448

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Solution

The third proportional to 12,989 and 28,448 is: 62,305.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989 : 28,448 = 28,448 : x
  2. Step 2: Convert to fraction form
    12,989/28,448 = 28,448/x
  3. Step 3: Cross multiply
    12,989x = 28,448 × 28,448
  4. Step 4: Simplify right side
    12,989x = 809,288,704
  5. Step 5: Solve for x
    x = 809,288,704/12,989
  6. Step 6: Final answer
    x = 62,305.70

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.