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Finding the Third Proportional to 9,916.50 and 21,750

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Solution

The third proportional to 9,916.50 and 21,750 is: 47,704.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,916.50 : 21,750 = 21,750 : x
  2. Step 2: Convert to fraction form
    9,916.50/21,750 = 21,750/x
  3. Step 3: Cross multiply
    9,916.50x = 21,750 × 21,750
  4. Step 4: Simplify right side
    9,916.50x = 473,062,500
  5. Step 5: Solve for x
    x = 473,062,500/9,916.50
  6. Step 6: Final answer
    x = 47,704.58

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.