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Finding the Third Proportional to 15,121.50 and 19,285.50

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Solution

The third proportional to 15,121.50 and 19,285.50 is: 24,596.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,121.50 : 19,285.50 = 19,285.50 : x
  2. Step 2: Convert to fraction form
    15,121.50/19,285.50 = 19,285.50/x
  3. Step 3: Cross multiply
    15,121.50x = 19,285.50 × 19,285.50
  4. Step 4: Simplify right side
    15,121.50x = 371,930,510.25
  5. Step 5: Solve for x
    x = 371,930,510.25/15,121.50
  6. Step 6: Final answer
    x = 24,596.14

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.