Home / 13,180.91-19,771.37-3,320.96

Finding the Fourth Proportional to 13,180.91, 19,771.37 and 3,320.96

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Solution

The fourth proportional to 13,180.91, 19,771.37 and 3,320.96 is: 4,981.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,180.91 : 19,771.37 = 3,320.96 : x
  2. Step 2: Convert to fraction form
    13,180.91/19,771.37 = 3,320.96/x
  3. Step 3: Cross multiply
    13,180.91x = 19,771.37 × 3,320.96
  4. Step 4: Simplify right side
    13,180.91x = 65,659,813.45
  5. Step 5: Solve for x
    x = 65,659,813.45/13,180.91
  6. Step 6: Final answer
    x = 4,981.43

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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.