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Finding the Fourth Proportional to 18,188.52, 25,100.40 and 11,113.44

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Solution

The fourth proportional to 18,188.52, 25,100.40 and 11,113.44 is: 15,336.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,188.52 : 25,100.40 = 11,113.44 : x
  2. Step 2: Convert to fraction form
    18,188.52/25,100.40 = 11,113.44/x
  3. Step 3: Cross multiply
    18,188.52x = 25,100.40 × 11,113.44
  4. Step 4: Simplify right side
    18,188.52x = 278,951,789.38
  5. Step 5: Solve for x
    x = 278,951,789.38/18,188.52
  6. Step 6: Final answer
    x = 15,336.70

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1.5x scale

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.