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Finding the Third Proportional to 15,084.50 and 18,058

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Solution

The third proportional to 15,084.50 and 18,058 is: 21,617.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,084.50 : 18,058 = 18,058 : x
  2. Step 2: Convert to fraction form
    15,084.50/18,058 = 18,058/x
  3. Step 3: Cross multiply
    15,084.50x = 18,058 × 18,058
  4. Step 4: Simplify right side
    15,084.50x = 326,091,364
  5. Step 5: Solve for x
    x = 326,091,364/15,084.50
  6. Step 6: Final answer
    x = 21,617.64

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Why These Related Problems?

These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.