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Finding the Third Proportional to 14,143 and 20,800

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Solution

The third proportional to 14,143 and 20,800 is: 30,590.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,143 : 20,800 = 20,800 : x
  2. Step 2: Convert to fraction form
    14,143/20,800 = 20,800/x
  3. Step 3: Cross multiply
    14,143x = 20,800 × 20,800
  4. Step 4: Simplify right side
    14,143x = 432,640,000
  5. Step 5: Solve for x
    x = 432,640,000/14,143
  6. Step 6: Final answer
    x = 30,590.40

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.