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Finding the Fourth Proportional to 16,867, 23,276.48 and 9,415

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Solution

The fourth proportional to 16,867, 23,276.48 and 9,415 is: 12,992.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,867 : 23,276.48 = 9,415 : x
  2. Step 2: Convert to fraction form
    16,867/23,276.48 = 9,415/x
  3. Step 3: Cross multiply
    16,867x = 23,276.48 × 9,415
  4. Step 4: Simplify right side
    16,867x = 219,148,059.20
  5. Step 5: Solve for x
    x = 219,148,059.20/16,867
  6. Step 6: Final answer
    x = 12,992.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.