Home / 13,789.44-20,685.38-3,928.50

Finding the Fourth Proportional to 13,789.44, 20,685.38 and 3,928.50

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Solution

The fourth proportional to 13,789.44, 20,685.38 and 3,928.50 is: 5,893.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789.44 : 20,685.38 = 3,928.50 : x
  2. Step 2: Convert to fraction form
    13,789.44/20,685.38 = 3,928.50/x
  3. Step 3: Cross multiply
    13,789.44x = 20,685.38 × 3,928.50
  4. Step 4: Simplify right side
    13,789.44x = 81,262,495.69
  5. Step 5: Solve for x
    x = 81,262,495.69/13,789.44
  6. Step 6: Final answer
    x = 5,893.10

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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.