Home / 28,083.52-42,135-18,760.96

Finding the Fourth Proportional to 28,083.52, 42,135 and 18,760.96

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Solution

The fourth proportional to 28,083.52, 42,135 and 18,760.96 is: 28,147.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,083.52 : 42,135 = 18,760.96 : x
  2. Step 2: Convert to fraction form
    28,083.52/42,135 = 18,760.96/x
  3. Step 3: Cross multiply
    28,083.52x = 42,135 × 18,760.96
  4. Step 4: Simplify right side
    28,083.52x = 790,493,049.60
  5. Step 5: Solve for x
    x = 790,493,049.60/28,083.52
  6. Step 6: Final answer
    x = 28,147.93

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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.