Home / 13,285.85-19,929.92-3,425.04

Finding the Fourth Proportional to 13,285.85, 19,929.92 and 3,425.04

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Solution

The fourth proportional to 13,285.85, 19,929.92 and 3,425.04 is: 5,137.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.85 : 19,929.92 = 3,425.04 : x
  2. Step 2: Convert to fraction form
    13,285.85/19,929.92 = 3,425.04/x
  3. Step 3: Cross multiply
    13,285.85x = 19,929.92 × 3,425.04
  4. Step 4: Simplify right side
    13,285.85x = 68,260,756.07
  5. Step 5: Solve for x
    x = 68,260,756.07/13,285.85
  6. Step 6: Final answer
    x = 5,137.86

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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.