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Finding the Third Proportional to 18,423 and 28,819.50

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Solution

The third proportional to 18,423 and 28,819.50 is: 45,082.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,423 : 28,819.50 = 28,819.50 : x
  2. Step 2: Convert to fraction form
    18,423/28,819.50 = 28,819.50/x
  3. Step 3: Cross multiply
    18,423x = 28,819.50 × 28,819.50
  4. Step 4: Simplify right side
    18,423x = 830,563,580.25
  5. Step 5: Solve for x
    x = 830,563,580.25/18,423
  6. Step 6: Final answer
    x = 45,082.97

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.