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Finding the Third Proportional to 16,890.75 and 20,445.75

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Solution

The third proportional to 16,890.75 and 20,445.75 is: 24,748.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,890.75 : 20,445.75 = 20,445.75 : x
  2. Step 2: Convert to fraction form
    16,890.75/20,445.75 = 20,445.75/x
  3. Step 3: Cross multiply
    16,890.75x = 20,445.75 × 20,445.75
  4. Step 4: Simplify right side
    16,890.75x = 418,028,693.06
  5. Step 5: Solve for x
    x = 418,028,693.06/16,890.75
  6. Step 6: Final answer
    x = 24,748.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.