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Finding the Third Proportional to 18,072 and 28,988

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Solution

The third proportional to 18,072 and 28,988 is: 46,497.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,072 : 28,988 = 28,988 : x
  2. Step 2: Convert to fraction form
    18,072/28,988 = 28,988/x
  3. Step 3: Cross multiply
    18,072x = 28,988 × 28,988
  4. Step 4: Simplify right side
    18,072x = 840,304,144
  5. Step 5: Solve for x
    x = 840,304,144/18,072
  6. Step 6: Final answer
    x = 46,497.57

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.