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Finding the Third Proportional to 18,789 and 28,788

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Solution

The third proportional to 18,789 and 28,788 is: 44,108.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,789 : 28,788 = 28,788 : x
  2. Step 2: Convert to fraction form
    18,789/28,788 = 28,788/x
  3. Step 3: Cross multiply
    18,789x = 28,788 × 28,788
  4. Step 4: Simplify right side
    18,789x = 828,748,944
  5. Step 5: Solve for x
    x = 828,748,944/18,789
  6. Step 6: Final answer
    x = 44,108.20

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.