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Finding the Third Proportional to 8,628.19 and 18,615.94

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Solution

The third proportional to 8,628.19 and 18,615.94 is: 40,165.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.19 : 18,615.94 = 18,615.94 : x
  2. Step 2: Convert to fraction form
    8,628.19/18,615.94 = 18,615.94/x
  3. Step 3: Cross multiply
    8,628.19x = 18,615.94 × 18,615.94
  4. Step 4: Simplify right side
    8,628.19x = 346,553,129.00
  5. Step 5: Solve for x
    x = 346,553,129.00/8,628.19
  6. Step 6: Final answer
    x = 40,165.23

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.