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Finding the Third Proportional to 16,428 and 25,485

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Solution

The third proportional to 16,428 and 25,485 is: 39,535.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,428 : 25,485 = 25,485 : x
  2. Step 2: Convert to fraction form
    16,428/25,485 = 25,485/x
  3. Step 3: Cross multiply
    16,428x = 25,485 × 25,485
  4. Step 4: Simplify right side
    16,428x = 649,485,225
  5. Step 5: Solve for x
    x = 649,485,225/16,428
  6. Step 6: Final answer
    x = 39,535.26

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.