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Finding the Third Proportional to 20,320 and 29,492

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Solution

The third proportional to 20,320 and 29,492 is: 42,804.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320 : 29,492 = 29,492 : x
  2. Step 2: Convert to fraction form
    20,320/29,492 = 29,492/x
  3. Step 3: Cross multiply
    20,320x = 29,492 × 29,492
  4. Step 4: Simplify right side
    20,320x = 869,778,064
  5. Step 5: Solve for x
    x = 869,778,064/20,320
  6. Step 6: Final answer
    x = 42,804.04

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.