Home / 13,808.43-20,709.21-3,947.82

Finding the Fourth Proportional to 13,808.43, 20,709.21 and 3,947.82

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Solution

The fourth proportional to 13,808.43, 20,709.21 and 3,947.82 is: 5,920.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,808.43 : 20,709.21 = 3,947.82 : x
  2. Step 2: Convert to fraction form
    13,808.43/20,709.21 = 3,947.82/x
  3. Step 3: Cross multiply
    13,808.43x = 20,709.21 × 3,947.82
  4. Step 4: Simplify right side
    13,808.43x = 81,756,233.42
  5. Step 5: Solve for x
    x = 81,756,233.42/13,808.43
  6. Step 6: Final answer
    x = 5,920.75

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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.