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Finding the Third Proportional to 16,416 and 21,813.75

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Solution

The third proportional to 16,416 and 21,813.75 is: 28,986.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,416 : 21,813.75 = 21,813.75 : x
  2. Step 2: Convert to fraction form
    16,416/21,813.75 = 21,813.75/x
  3. Step 3: Cross multiply
    16,416x = 21,813.75 × 21,813.75
  4. Step 4: Simplify right side
    16,416x = 475,839,689.06
  5. Step 5: Solve for x
    x = 475,839,689.06/16,416
  6. Step 6: Final answer
    x = 28,986.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.