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Finding the Third Proportional to 20,000 and 28,491

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Solution

The third proportional to 20,000 and 28,491 is: 40,586.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,000 : 28,491 = 28,491 : x
  2. Step 2: Convert to fraction form
    20,000/28,491 = 28,491/x
  3. Step 3: Cross multiply
    20,000x = 28,491 × 28,491
  4. Step 4: Simplify right side
    20,000x = 811,737,081
  5. Step 5: Solve for x
    x = 811,737,081/20,000
  6. Step 6: Final answer
    x = 40,586.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.