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Finding the Third Proportional to 8,631.56 and 18,959.06

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Solution

The third proportional to 8,631.56 and 18,959.06 is: 41,643.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.56 : 18,959.06 = 18,959.06 : x
  2. Step 2: Convert to fraction form
    8,631.56/18,959.06 = 18,959.06/x
  3. Step 3: Cross multiply
    8,631.56x = 18,959.06 × 18,959.06
  4. Step 4: Simplify right side
    8,631.56x = 359,446,050.88
  5. Step 5: Solve for x
    x = 359,446,050.88/8,631.56
  6. Step 6: Final answer
    x = 41,643.22

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.