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Finding the Third Proportional to 7,980 and 18,426

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Solution

The third proportional to 7,980 and 18,426 is: 42,546.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980 : 18,426 = 18,426 : x
  2. Step 2: Convert to fraction form
    7,980/18,426 = 18,426/x
  3. Step 3: Cross multiply
    7,980x = 18,426 × 18,426
  4. Step 4: Simplify right side
    7,980x = 339,517,476
  5. Step 5: Solve for x
    x = 339,517,476/7,980
  6. Step 6: Final answer
    x = 42,546.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.