Home / 18,923.30-28,388.40-6,442.73

Finding the Fourth Proportional to 18,923.30, 28,388.40 and 6,442.73

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Solution

The fourth proportional to 18,923.30, 28,388.40 and 6,442.73 is: 9,665.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,923.30 : 28,388.40 = 6,442.73 : x
  2. Step 2: Convert to fraction form
    18,923.30/28,388.40 = 6,442.73/x
  3. Step 3: Cross multiply
    18,923.30x = 28,388.40 × 6,442.73
  4. Step 4: Simplify right side
    18,923.30x = 182,898,796.33
  5. Step 5: Solve for x
    x = 182,898,796.33/18,923.30
  6. Step 6: Final answer
    x = 9,665.27

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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.