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Finding the Third Proportional to 20,820 and 29,448

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Solution

The third proportional to 20,820 and 29,448 is: 41,651.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,820 : 29,448 = 29,448 : x
  2. Step 2: Convert to fraction form
    20,820/29,448 = 29,448/x
  3. Step 3: Cross multiply
    20,820x = 29,448 × 29,448
  4. Step 4: Simplify right side
    20,820x = 867,184,704
  5. Step 5: Solve for x
    x = 867,184,704/20,820
  6. Step 6: Final answer
    x = 41,651.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.