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Finding the Third Proportional to 18,747 and 39,585

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Solution

The third proportional to 18,747 and 39,585 is: 83,585.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747 : 39,585 = 39,585 : x
  2. Step 2: Convert to fraction form
    18,747/39,585 = 39,585/x
  3. Step 3: Cross multiply
    18,747x = 39,585 × 39,585
  4. Step 4: Simplify right side
    18,747x = 1,566,972,225
  5. Step 5: Solve for x
    x = 1,566,972,225/18,747
  6. Step 6: Final answer
    x = 83,585.23

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.