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Finding the Third Proportional to 7,109.81 and 15,309.75

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Solution

The third proportional to 7,109.81 and 15,309.75 is: 32,966.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.81 : 15,309.75 = 15,309.75 : x
  2. Step 2: Convert to fraction form
    7,109.81/15,309.75 = 15,309.75/x
  3. Step 3: Cross multiply
    7,109.81x = 15,309.75 × 15,309.75
  4. Step 4: Simplify right side
    7,109.81x = 234,388,445.06
  5. Step 5: Solve for x
    x = 234,388,445.06/7,109.81
  6. Step 6: Final answer
    x = 32,966.90

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.