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Finding the Third Proportional to 18,996 and 28,340

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Solution

The third proportional to 18,996 and 28,340 is: 42,280.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,996 : 28,340 = 28,340 : x
  2. Step 2: Convert to fraction form
    18,996/28,340 = 28,340/x
  3. Step 3: Cross multiply
    18,996x = 28,340 × 28,340
  4. Step 4: Simplify right side
    18,996x = 803,155,600
  5. Step 5: Solve for x
    x = 803,155,600/18,996
  6. Step 6: Final answer
    x = 42,280.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.