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Finding the Third Proportional to 16,921.50 and 39,000.75

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Solution

The third proportional to 16,921.50 and 39,000.75 is: 89,889.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,921.50 : 39,000.75 = 39,000.75 : x
  2. Step 2: Convert to fraction form
    16,921.50/39,000.75 = 39,000.75/x
  3. Step 3: Cross multiply
    16,921.50x = 39,000.75 × 39,000.75
  4. Step 4: Simplify right side
    16,921.50x = 1,521,058,500.56
  5. Step 5: Solve for x
    x = 1,521,058,500.56/16,921.50
  6. Step 6: Final answer
    x = 89,889.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.