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Finding the Fourth Proportional to 18,800.08, 28,251.32 and 18,108.88

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Solution

The fourth proportional to 18,800.08, 28,251.32 and 18,108.88 is: 27,212.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,800.08 : 28,251.32 = 18,108.88 : x
  2. Step 2: Convert to fraction form
    18,800.08/28,251.32 = 18,108.88/x
  3. Step 3: Cross multiply
    18,800.08x = 28,251.32 × 18,108.88
  4. Step 4: Simplify right side
    18,800.08x = 511,599,763.72
  5. Step 5: Solve for x
    x = 511,599,763.72/18,800.08
  6. Step 6: Final answer
    x = 27,212.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.