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Finding the Third Proportional to 18,788.25 and 28,130.63

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Solution

The third proportional to 18,788.25 and 28,130.63 is: 42,118.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.25 : 28,130.63 = 28,130.63 : x
  2. Step 2: Convert to fraction form
    18,788.25/28,130.63 = 28,130.63/x
  3. Step 3: Cross multiply
    18,788.25x = 28,130.63 × 28,130.63
  4. Step 4: Simplify right side
    18,788.25x = 791,332,062.89
  5. Step 5: Solve for x
    x = 791,332,062.89/18,788.25
  6. Step 6: Final answer
    x = 42,118.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.