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Finding the Fourth Proportional to 18,125.64, 25,013.52 and 11,838

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Solution

The fourth proportional to 18,125.64, 25,013.52 and 11,838 is: 16,336.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,125.64 : 25,013.52 = 11,838 : x
  2. Step 2: Convert to fraction form
    18,125.64/25,013.52 = 11,838/x
  3. Step 3: Cross multiply
    18,125.64x = 25,013.52 × 11,838
  4. Step 4: Simplify right side
    18,125.64x = 296,110,049.76
  5. Step 5: Solve for x
    x = 296,110,049.76/18,125.64
  6. Step 6: Final answer
    x = 16,336.53

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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.