Home / 13,720.87-20,584.38-4,360.84

Finding the Fourth Proportional to 13,720.87, 20,584.38 and 4,360.84

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Solution

The fourth proportional to 13,720.87, 20,584.38 and 4,360.84 is: 6,542.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.87 : 20,584.38 = 4,360.84 : x
  2. Step 2: Convert to fraction form
    13,720.87/20,584.38 = 4,360.84/x
  3. Step 3: Cross multiply
    13,720.87x = 20,584.38 × 4,360.84
  4. Step 4: Simplify right side
    13,720.87x = 89,765,187.68
  5. Step 5: Solve for x
    x = 89,765,187.68/13,720.87
  6. Step 6: Final answer
    x = 6,542.24

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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.