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Finding the Third Proportional to 19,830 and 29,747

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Solution

The third proportional to 19,830 and 29,747 is: 44,623.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,830 : 29,747 = 29,747 : x
  2. Step 2: Convert to fraction form
    19,830/29,747 = 29,747/x
  3. Step 3: Cross multiply
    19,830x = 29,747 × 29,747
  4. Step 4: Simplify right side
    19,830x = 884,884,009
  5. Step 5: Solve for x
    x = 884,884,009/19,830
  6. Step 6: Final answer
    x = 44,623.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.