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Finding the Third Proportional to 18,429 and 28,343

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Solution

The third proportional to 18,429 and 28,343 is: 43,590.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,429 : 28,343 = 28,343 : x
  2. Step 2: Convert to fraction form
    18,429/28,343 = 28,343/x
  3. Step 3: Cross multiply
    18,429x = 28,343 × 28,343
  4. Step 4: Simplify right side
    18,429x = 803,325,649
  5. Step 5: Solve for x
    x = 803,325,649/18,429
  6. Step 6: Final answer
    x = 43,590.30

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.