Home / 18,942.06-28,433.86-7,856.52

Finding the Fourth Proportional to 18,942.06, 28,433.86 and 7,856.52

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Solution

The fourth proportional to 18,942.06, 28,433.86 and 7,856.52 is: 11,793.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,942.06 : 28,433.86 = 7,856.52 : x
  2. Step 2: Convert to fraction form
    18,942.06/28,433.86 = 7,856.52/x
  3. Step 3: Cross multiply
    18,942.06x = 28,433.86 × 7,856.52
  4. Step 4: Simplify right side
    18,942.06x = 223,391,189.77
  5. Step 5: Solve for x
    x = 223,391,189.77/18,942.06
  6. Step 6: Final answer
    x = 11,793.39

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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.