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Finding the Third Proportional to 15,009.75 and 31,821.75

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Solution

The third proportional to 15,009.75 and 31,821.75 is: 67,464.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,009.75 : 31,821.75 = 31,821.75 : x
  2. Step 2: Convert to fraction form
    15,009.75/31,821.75 = 31,821.75/x
  3. Step 3: Cross multiply
    15,009.75x = 31,821.75 × 31,821.75
  4. Step 4: Simplify right side
    15,009.75x = 1,012,623,773.06
  5. Step 5: Solve for x
    x = 1,012,623,773.06/15,009.75
  6. Step 6: Final answer
    x = 67,464.40

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.