Home / 13,772.46-20,658.96-3,911.79

Finding the Fourth Proportional to 13,772.46, 20,658.96 and 3,911.79

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Solution

The fourth proportional to 13,772.46, 20,658.96 and 3,911.79 is: 5,867.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.46 : 20,658.96 = 3,911.79 : x
  2. Step 2: Convert to fraction form
    13,772.46/20,658.96 = 3,911.79/x
  3. Step 3: Cross multiply
    13,772.46x = 20,658.96 × 3,911.79
  4. Step 4: Simplify right side
    13,772.46x = 80,813,513.14
  5. Step 5: Solve for x
    x = 80,813,513.14/13,772.46
  6. Step 6: Final answer
    x = 5,867.76

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1.5x scale

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.