Home / 13,568.55-20,355.75-4,208.38

Finding the Fourth Proportional to 13,568.55, 20,355.75 and 4,208.38

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Solution

The fourth proportional to 13,568.55, 20,355.75 and 4,208.38 is: 6,313.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,568.55 : 20,355.75 = 4,208.38 : x
  2. Step 2: Convert to fraction form
    13,568.55/20,355.75 = 4,208.38/x
  3. Step 3: Cross multiply
    13,568.55x = 20,355.75 × 4,208.38
  4. Step 4: Simplify right side
    13,568.55x = 85,664,720.66
  5. Step 5: Solve for x
    x = 85,664,720.66/13,568.55
  6. Step 6: Final answer
    x = 6,313.48

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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.