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Finding the Third Proportional to 13,398.75 and 17,620.88

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Solution

The third proportional to 13,398.75 and 17,620.88 is: 23,173.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.75 : 17,620.88 = 17,620.88 : x
  2. Step 2: Convert to fraction form
    13,398.75/17,620.88 = 17,620.88/x
  3. Step 3: Cross multiply
    13,398.75x = 17,620.88 × 17,620.88
  4. Step 4: Simplify right side
    13,398.75x = 310,495,235.77
  5. Step 5: Solve for x
    x = 310,495,235.77/13,398.75
  6. Step 6: Final answer
    x = 23,173.45

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.