Home / 13,649.62-20,470.06-5,327.60

Finding the Fourth Proportional to 13,649.62, 20,470.06 and 5,327.60

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Solution

The fourth proportional to 13,649.62, 20,470.06 and 5,327.60 is: 7,989.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,649.62 : 20,470.06 = 5,327.60 : x
  2. Step 2: Convert to fraction form
    13,649.62/20,470.06 = 5,327.60/x
  3. Step 3: Cross multiply
    13,649.62x = 20,470.06 × 5,327.60
  4. Step 4: Simplify right side
    13,649.62x = 109,056,291.66
  5. Step 5: Solve for x
    x = 109,056,291.66/13,649.62
  6. Step 6: Final answer
    x = 7,989.69

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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.