Home / 13,885.96-20,828.72-3,355.88

Finding the Fourth Proportional to 13,885.96, 20,828.72 and 3,355.88

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Solution

The fourth proportional to 13,885.96, 20,828.72 and 3,355.88 is: 5,033.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,885.96 : 20,828.72 = 3,355.88 : x
  2. Step 2: Convert to fraction form
    13,885.96/20,828.72 = 3,355.88/x
  3. Step 3: Cross multiply
    13,885.96x = 20,828.72 × 3,355.88
  4. Step 4: Simplify right side
    13,885.96x = 69,898,684.87
  5. Step 5: Solve for x
    x = 69,898,684.87/13,885.96
  6. Step 6: Final answer
    x = 5,033.77

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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.