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Finding the Third Proportional to 21,423 and 46,500

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Solution

The third proportional to 21,423 and 46,500 is: 100,931.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,423 : 46,500 = 46,500 : x
  2. Step 2: Convert to fraction form
    21,423/46,500 = 46,500/x
  3. Step 3: Cross multiply
    21,423x = 46,500 × 46,500
  4. Step 4: Simplify right side
    21,423x = 2,162,250,000
  5. Step 5: Solve for x
    x = 2,162,250,000/21,423
  6. Step 6: Final answer
    x = 100,931.24

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.