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Finding the Third Proportional to 7,705.13 and 10,919.81

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Solution

The third proportional to 7,705.13 and 10,919.81 is: 15,475.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,705.13 : 10,919.81 = 10,919.81 : x
  2. Step 2: Convert to fraction form
    7,705.13/10,919.81 = 10,919.81/x
  3. Step 3: Cross multiply
    7,705.13x = 10,919.81 × 10,919.81
  4. Step 4: Simplify right side
    7,705.13x = 119,242,305.04
  5. Step 5: Solve for x
    x = 119,242,305.04/7,705.13
  6. Step 6: Final answer
    x = 15,475.71

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.