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Finding the Third Proportional to 8,424 and 19,928

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Solution

The third proportional to 8,424 and 19,928 is: 47,142.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,424 : 19,928 = 19,928 : x
  2. Step 2: Convert to fraction form
    8,424/19,928 = 19,928/x
  3. Step 3: Cross multiply
    8,424x = 19,928 × 19,928
  4. Step 4: Simplify right side
    8,424x = 397,125,184
  5. Step 5: Solve for x
    x = 397,125,184/8,424
  6. Step 6: Final answer
    x = 47,142.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.