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Finding the Third Proportional to 18,909 and 25,417.13

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Solution

The third proportional to 18,909 and 25,417.13 is: 34,165.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,909 : 25,417.13 = 25,417.13 : x
  2. Step 2: Convert to fraction form
    18,909/25,417.13 = 25,417.13/x
  3. Step 3: Cross multiply
    18,909x = 25,417.13 × 25,417.13
  4. Step 4: Simplify right side
    18,909x = 646,030,243.27
  5. Step 5: Solve for x
    x = 646,030,243.27/18,909
  6. Step 6: Final answer
    x = 34,165.23

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.