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Finding the Third Proportional to 18,516 and 39,239.25

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Solution

The third proportional to 18,516 and 39,239.25 is: 83,156.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,516 : 39,239.25 = 39,239.25 : x
  2. Step 2: Convert to fraction form
    18,516/39,239.25 = 39,239.25/x
  3. Step 3: Cross multiply
    18,516x = 39,239.25 × 39,239.25
  4. Step 4: Simplify right side
    18,516x = 1,539,718,740.56
  5. Step 5: Solve for x
    x = 1,539,718,740.56/18,516
  6. Step 6: Final answer
    x = 83,156.12

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.