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Finding the Third Proportional to 18,651 and 28,248

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Solution

The third proportional to 18,651 and 28,248 is: 42,783.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651 : 28,248 = 28,248 : x
  2. Step 2: Convert to fraction form
    18,651/28,248 = 28,248/x
  3. Step 3: Cross multiply
    18,651x = 28,248 × 28,248
  4. Step 4: Simplify right side
    18,651x = 797,949,504
  5. Step 5: Solve for x
    x = 797,949,504/18,651
  6. Step 6: Final answer
    x = 42,783.20

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.