Home / 13,928.97-20,896.50-6,912.78

Finding the Fourth Proportional to 13,928.97, 20,896.50 and 6,912.78

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Solution

The fourth proportional to 13,928.97, 20,896.50 and 6,912.78 is: 10,370.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.97 : 20,896.50 = 6,912.78 : x
  2. Step 2: Convert to fraction form
    13,928.97/20,896.50 = 6,912.78/x
  3. Step 3: Cross multiply
    13,928.97x = 20,896.50 × 6,912.78
  4. Step 4: Simplify right side
    13,928.97x = 144,452,907.27
  5. Step 5: Solve for x
    x = 144,452,907.27/13,928.97
  6. Step 6: Final answer
    x = 10,370.68

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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.