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Finding the Third Proportional to 18,840 and 28,504

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Solution

The third proportional to 18,840 and 28,504 is: 43,125.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,840 : 28,504 = 28,504 : x
  2. Step 2: Convert to fraction form
    18,840/28,504 = 28,504/x
  3. Step 3: Cross multiply
    18,840x = 28,504 × 28,504
  4. Step 4: Simplify right side
    18,840x = 812,478,016
  5. Step 5: Solve for x
    x = 812,478,016/18,840
  6. Step 6: Final answer
    x = 43,125.16

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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.