Home / 13,672.09-20,508.29-3,811.46

Finding the Fourth Proportional to 13,672.09, 20,508.29 and 3,811.46

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Solution

The fourth proportional to 13,672.09, 20,508.29 and 3,811.46 is: 5,717.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.09 : 20,508.29 = 3,811.46 : x
  2. Step 2: Convert to fraction form
    13,672.09/20,508.29 = 3,811.46/x
  3. Step 3: Cross multiply
    13,672.09x = 20,508.29 × 3,811.46
  4. Step 4: Simplify right side
    13,672.09x = 78,166,419.70
  5. Step 5: Solve for x
    x = 78,166,419.70/13,672.09
  6. Step 6: Final answer
    x = 5,717.22

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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.