Home / 13,619.22-20,428.84-3,761.34

Finding the Fourth Proportional to 13,619.22, 20,428.84 and 3,761.34

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Solution

The fourth proportional to 13,619.22, 20,428.84 and 3,761.34 is: 5,642.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.22 : 20,428.84 = 3,761.34 : x
  2. Step 2: Convert to fraction form
    13,619.22/20,428.84 = 3,761.34/x
  3. Step 3: Cross multiply
    13,619.22x = 20,428.84 × 3,761.34
  4. Step 4: Simplify right side
    13,619.22x = 76,839,813.05
  5. Step 5: Solve for x
    x = 76,839,813.05/13,619.22
  6. Step 6: Final answer
    x = 5,642.01

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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.