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Finding the Third Proportional to 5,509.13 and 12,992.63

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Solution

The third proportional to 5,509.13 and 12,992.63 is: 30,641.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,509.13 : 12,992.63 = 12,992.63 : x
  2. Step 2: Convert to fraction form
    5,509.13/12,992.63 = 12,992.63/x
  3. Step 3: Cross multiply
    5,509.13x = 12,992.63 × 12,992.63
  4. Step 4: Simplify right side
    5,509.13x = 168,808,304.39
  5. Step 5: Solve for x
    x = 168,808,304.39/5,509.13
  6. Step 6: Final answer
    x = 30,641.58

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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.