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Finding the Third Proportional to 20,730 and 31,095

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Solution

The third proportional to 20,730 and 31,095 is: 46,642.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730 : 31,095 = 31,095 : x
  2. Step 2: Convert to fraction form
    20,730/31,095 = 31,095/x
  3. Step 3: Cross multiply
    20,730x = 31,095 × 31,095
  4. Step 4: Simplify right side
    20,730x = 966,899,025
  5. Step 5: Solve for x
    x = 966,899,025/20,730
  6. Step 6: Final answer
    x = 46,642.50

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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.