Home / 13,825.20-20,737.88-3,436.95

Finding the Fourth Proportional to 13,825.20, 20,737.88 and 3,436.95

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Solution

The fourth proportional to 13,825.20, 20,737.88 and 3,436.95 is: 5,155.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,825.20 : 20,737.88 = 3,436.95 : x
  2. Step 2: Convert to fraction form
    13,825.20/20,737.88 = 3,436.95/x
  3. Step 3: Cross multiply
    13,825.20x = 20,737.88 × 3,436.95
  4. Step 4: Simplify right side
    13,825.20x = 71,275,048.07
  5. Step 5: Solve for x
    x = 71,275,048.07/13,825.20
  6. Step 6: Final answer
    x = 5,155.44

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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.