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Finding the Third Proportional to 18,430 and 28,373

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Solution

The third proportional to 18,430 and 28,373 is: 43,680.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,430 : 28,373 = 28,373 : x
  2. Step 2: Convert to fraction form
    18,430/28,373 = 28,373/x
  3. Step 3: Cross multiply
    18,430x = 28,373 × 28,373
  4. Step 4: Simplify right side
    18,430x = 805,027,129
  5. Step 5: Solve for x
    x = 805,027,129/18,430
  6. Step 6: Final answer
    x = 43,680.26

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.