Home / 13,670.37-20,506.28-3,809.61

Finding the Fourth Proportional to 13,670.37, 20,506.28 and 3,809.61

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Solution

The fourth proportional to 13,670.37, 20,506.28 and 3,809.61 is: 5,714.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.37 : 20,506.28 = 3,809.61 : x
  2. Step 2: Convert to fraction form
    13,670.37/20,506.28 = 3,809.61/x
  3. Step 3: Cross multiply
    13,670.37x = 20,506.28 × 3,809.61
  4. Step 4: Simplify right side
    13,670.37x = 78,120,910.30
  5. Step 5: Solve for x
    x = 78,120,910.30/13,670.37
  6. Step 6: Final answer
    x = 5,714.62

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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.