Home / 13,625.73-20,439.50-5,305.20

Finding the Fourth Proportional to 13,625.73, 20,439.50 and 5,305.20

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Solution

The fourth proportional to 13,625.73, 20,439.50 and 5,305.20 is: 7,958.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,625.73 : 20,439.50 = 5,305.20 : x
  2. Step 2: Convert to fraction form
    13,625.73/20,439.50 = 5,305.20/x
  3. Step 3: Cross multiply
    13,625.73x = 20,439.50 × 5,305.20
  4. Step 4: Simplify right side
    13,625.73x = 108,435,608.87
  5. Step 5: Solve for x
    x = 108,435,608.87/13,625.73
  6. Step 6: Final answer
    x = 7,958.15

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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.