Home / 13,603.87-20,399.59-4,241.15

Finding the Fourth Proportional to 13,603.87, 20,399.59 and 4,241.15

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Solution

The fourth proportional to 13,603.87, 20,399.59 and 4,241.15 is: 6,359.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603.87 : 20,399.59 = 4,241.15 : x
  2. Step 2: Convert to fraction form
    13,603.87/20,399.59 = 4,241.15/x
  3. Step 3: Cross multiply
    13,603.87x = 20,399.59 × 4,241.15
  4. Step 4: Simplify right side
    13,603.87x = 86,517,721.13
  5. Step 5: Solve for x
    x = 86,517,721.13/13,603.87
  6. Step 6: Final answer
    x = 6,359.79

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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.