Home / 13,807.82-20,711.62-3,419.57

Finding the Fourth Proportional to 13,807.82, 20,711.62 and 3,419.57

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Solution

The fourth proportional to 13,807.82, 20,711.62 and 3,419.57 is: 5,129.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,807.82 : 20,711.62 = 3,419.57 : x
  2. Step 2: Convert to fraction form
    13,807.82/20,711.62 = 3,419.57/x
  3. Step 3: Cross multiply
    13,807.82x = 20,711.62 × 3,419.57
  4. Step 4: Simplify right side
    13,807.82x = 70,824,722.30
  5. Step 5: Solve for x
    x = 70,824,722.30/13,807.82
  6. Step 6: Final answer
    x = 5,129.32

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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.