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Finding the Fourth Proportional to 15,016, 20,722.08 and 8,392

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Solution

The fourth proportional to 15,016, 20,722.08 and 8,392 is: 11,580.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016 : 20,722.08 = 8,392 : x
  2. Step 2: Convert to fraction form
    15,016/20,722.08 = 8,392/x
  3. Step 3: Cross multiply
    15,016x = 20,722.08 × 8,392
  4. Step 4: Simplify right side
    15,016x = 173,899,695.36
  5. Step 5: Solve for x
    x = 173,899,695.36/15,016
  6. Step 6: Final answer
    x = 11,580.96

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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.