Home / 13,758.12-20,638.68-4,395.96

Finding the Fourth Proportional to 13,758.12, 20,638.68 and 4,395.96

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Solution

The fourth proportional to 13,758.12, 20,638.68 and 4,395.96 is: 6,594.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,758.12 : 20,638.68 = 4,395.96 : x
  2. Step 2: Convert to fraction form
    13,758.12/20,638.68 = 4,395.96/x
  3. Step 3: Cross multiply
    13,758.12x = 20,638.68 × 4,395.96
  4. Step 4: Simplify right side
    13,758.12x = 90,726,811.73
  5. Step 5: Solve for x
    x = 90,726,811.73/13,758.12
  6. Step 6: Final answer
    x = 6,594.42

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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.