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Finding the Third Proportional to 8,990 and 19,508

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Solution

The third proportional to 8,990 and 19,508 is: 42,331.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990 : 19,508 = 19,508 : x
  2. Step 2: Convert to fraction form
    8,990/19,508 = 19,508/x
  3. Step 3: Cross multiply
    8,990x = 19,508 × 19,508
  4. Step 4: Simplify right side
    8,990x = 380,562,064
  5. Step 5: Solve for x
    x = 380,562,064/8,990
  6. Step 6: Final answer
    x = 42,331.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.