Home / 13,770.24-20,652.47-3,906.87

Finding the Fourth Proportional to 13,770.24, 20,652.47 and 3,906.87

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Solution

The fourth proportional to 13,770.24, 20,652.47 and 3,906.87 is: 5,859.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,770.24 : 20,652.47 = 3,906.87 : x
  2. Step 2: Convert to fraction form
    13,770.24/20,652.47 = 3,906.87/x
  3. Step 3: Cross multiply
    13,770.24x = 20,652.47 × 3,906.87
  4. Step 4: Simplify right side
    13,770.24x = 80,686,433.14
  5. Step 5: Solve for x
    x = 80,686,433.14/13,770.24
  6. Step 6: Final answer
    x = 5,859.48

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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.