Home / 18,731.22-28,110.69-12,795.54

Finding the Fourth Proportional to 18,731.22, 28,110.69 and 12,795.54

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Solution

The fourth proportional to 18,731.22, 28,110.69 and 12,795.54 is: 19,202.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,731.22 : 28,110.69 = 12,795.54 : x
  2. Step 2: Convert to fraction form
    18,731.22/28,110.69 = 12,795.54/x
  3. Step 3: Cross multiply
    18,731.22x = 28,110.69 × 12,795.54
  4. Step 4: Simplify right side
    18,731.22x = 359,691,458.32
  5. Step 5: Solve for x
    x = 359,691,458.32/18,731.22
  6. Step 6: Final answer
    x = 19,202.78

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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.