Home / 20,388.24-30,575.94-8,541.96

Finding the Fourth Proportional to 20,388.24, 30,575.94 and 8,541.96

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Solution

The fourth proportional to 20,388.24, 30,575.94 and 8,541.96 is: 12,810.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,388.24 : 30,575.94 = 8,541.96 : x
  2. Step 2: Convert to fraction form
    20,388.24/30,575.94 = 8,541.96/x
  3. Step 3: Cross multiply
    20,388.24x = 30,575.94 × 8,541.96
  4. Step 4: Simplify right side
    20,388.24x = 261,178,456.44
  5. Step 5: Solve for x
    x = 261,178,456.44/20,388.24
  6. Step 6: Final answer
    x = 12,810.25

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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.