Home / 13,955.20-20,906.88-9,329.92

Finding the Fourth Proportional to 13,955.20, 20,906.88 and 9,329.92

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Solution

The fourth proportional to 13,955.20, 20,906.88 and 9,329.92 is: 13,977.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,955.20 : 20,906.88 = 9,329.92 : x
  2. Step 2: Convert to fraction form
    13,955.20/20,906.88 = 9,329.92/x
  3. Step 3: Cross multiply
    13,955.20x = 20,906.88 × 9,329.92
  4. Step 4: Simplify right side
    13,955.20x = 195,059,517.85
  5. Step 5: Solve for x
    x = 195,059,517.85/13,955.20
  6. Step 6: Final answer
    x = 13,977.55

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1.5x scale

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.