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Finding the Third Proportional to 7,621.75 and 11,009.04

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Solution

The third proportional to 7,621.75 and 11,009.04 is: 15,901.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.75 : 11,009.04 = 11,009.04 : x
  2. Step 2: Convert to fraction form
    7,621.75/11,009.04 = 11,009.04/x
  3. Step 3: Cross multiply
    7,621.75x = 11,009.04 × 11,009.04
  4. Step 4: Simplify right side
    7,621.75x = 121,198,941.08
  5. Step 5: Solve for x
    x = 121,198,941.08/7,621.75
  6. Step 6: Final answer
    x = 15,901.72

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.