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Finding the Third Proportional to 10,215 and 21,993.75

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Solution

The third proportional to 10,215 and 21,993.75 is: 47,354.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215 : 21,993.75 = 21,993.75 : x
  2. Step 2: Convert to fraction form
    10,215/21,993.75 = 21,993.75/x
  3. Step 3: Cross multiply
    10,215x = 21,993.75 × 21,993.75
  4. Step 4: Simplify right side
    10,215x = 483,725,039.06
  5. Step 5: Solve for x
    x = 483,725,039.06/10,215
  6. Step 6: Final answer
    x = 47,354.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.