Home / 18,838.20-28,237.25-8,956.61

Finding the Fourth Proportional to 18,838.20, 28,237.25 and 8,956.61

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Solution

The fourth proportional to 18,838.20, 28,237.25 and 8,956.61 is: 13,425.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,838.20 : 28,237.25 = 8,956.61 : x
  2. Step 2: Convert to fraction form
    18,838.20/28,237.25 = 8,956.61/x
  3. Step 3: Cross multiply
    18,838.20x = 28,237.25 × 8,956.61
  4. Step 4: Simplify right side
    18,838.20x = 252,909,894.54
  5. Step 5: Solve for x
    x = 252,909,894.54/18,838.20
  6. Step 6: Final answer
    x = 13,425.37

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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.