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Finding the Third Proportional to 17,990 and 28,159

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Solution

The third proportional to 17,990 and 28,159 is: 44,076.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,990 : 28,159 = 28,159 : x
  2. Step 2: Convert to fraction form
    17,990/28,159 = 28,159/x
  3. Step 3: Cross multiply
    17,990x = 28,159 × 28,159
  4. Step 4: Simplify right side
    17,990x = 792,929,281
  5. Step 5: Solve for x
    x = 792,929,281/17,990
  6. Step 6: Final answer
    x = 44,076.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.