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Finding the Third Proportional to 13,545 and 20,578.50

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Solution

The third proportional to 13,545 and 20,578.50 is: 31,264.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545 : 20,578.50 = 20,578.50 : x
  2. Step 2: Convert to fraction form
    13,545/20,578.50 = 20,578.50/x
  3. Step 3: Cross multiply
    13,545x = 20,578.50 × 20,578.50
  4. Step 4: Simplify right side
    13,545x = 423,474,662.25
  5. Step 5: Solve for x
    x = 423,474,662.25/13,545
  6. Step 6: Final answer
    x = 31,264.28

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.