Home / 13,765.93-20,650.61-3,905.19

Finding the Fourth Proportional to 13,765.93, 20,650.61 and 3,905.19

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Solution

The fourth proportional to 13,765.93, 20,650.61 and 3,905.19 is: 5,858.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,765.93 : 20,650.61 = 3,905.19 : x
  2. Step 2: Convert to fraction form
    13,765.93/20,650.61 = 3,905.19/x
  3. Step 3: Cross multiply
    13,765.93x = 20,650.61 × 3,905.19
  4. Step 4: Simplify right side
    13,765.93x = 80,644,565.43
  5. Step 5: Solve for x
    x = 80,644,565.43/13,765.93
  6. Step 6: Final answer
    x = 5,858.27

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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.