Home / 13,773.20-20,660.80-3,913.26

Finding the Fourth Proportional to 13,773.20, 20,660.80 and 3,913.26

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Solution

The fourth proportional to 13,773.20, 20,660.80 and 3,913.26 is: 5,870.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,773.20 : 20,660.80 = 3,913.26 : x
  2. Step 2: Convert to fraction form
    13,773.20/20,660.80 = 3,913.26/x
  3. Step 3: Cross multiply
    13,773.20x = 20,660.80 × 3,913.26
  4. Step 4: Simplify right side
    13,773.20x = 80,851,082.21
  5. Step 5: Solve for x
    x = 80,851,082.21/13,773.20
  6. Step 6: Final answer
    x = 5,870.17

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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.