Home / 13,881.46-20,822.19-3,493.21

Finding the Fourth Proportional to 13,881.46, 20,822.19 and 3,493.21

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Solution

The fourth proportional to 13,881.46, 20,822.19 and 3,493.21 is: 5,239.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,881.46 : 20,822.19 = 3,493.21 : x
  2. Step 2: Convert to fraction form
    13,881.46/20,822.19 = 3,493.21/x
  3. Step 3: Cross multiply
    13,881.46x = 20,822.19 × 3,493.21
  4. Step 4: Simplify right side
    13,881.46x = 72,736,178.22
  5. Step 5: Solve for x
    x = 72,736,178.22/13,881.46
  6. Step 6: Final answer
    x = 5,239.81

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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.