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Finding the Third Proportional to 13,001.50 and 19,415

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Solution

The third proportional to 13,001.50 and 19,415 is: 28,992.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,001.50 : 19,415 = 19,415 : x
  2. Step 2: Convert to fraction form
    13,001.50/19,415 = 19,415/x
  3. Step 3: Cross multiply
    13,001.50x = 19,415 × 19,415
  4. Step 4: Simplify right side
    13,001.50x = 376,942,225
  5. Step 5: Solve for x
    x = 376,942,225/13,001.50
  6. Step 6: Final answer
    x = 28,992.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.