Home / 20,835.58-31,234.32-8,353.48

Finding the Fourth Proportional to 20,835.58, 31,234.32 and 8,353.48

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Solution

The fourth proportional to 20,835.58, 31,234.32 and 8,353.48 is: 12,522.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.58 : 31,234.32 = 8,353.48 : x
  2. Step 2: Convert to fraction form
    20,835.58/31,234.32 = 8,353.48/x
  3. Step 3: Cross multiply
    20,835.58x = 31,234.32 × 8,353.48
  4. Step 4: Simplify right side
    20,835.58x = 260,915,267.43
  5. Step 5: Solve for x
    x = 260,915,267.43/20,835.58
  6. Step 6: Final answer
    x = 12,522.58

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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.