Home / 13,289.32-19,936.79-3,928.60

Finding the Fourth Proportional to 13,289.32, 19,936.79 and 3,928.60

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Solution

The fourth proportional to 13,289.32, 19,936.79 and 3,928.60 is: 5,893.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.32 : 19,936.79 = 3,928.60 : x
  2. Step 2: Convert to fraction form
    13,289.32/19,936.79 = 3,928.60/x
  3. Step 3: Cross multiply
    13,289.32x = 19,936.79 × 3,928.60
  4. Step 4: Simplify right side
    13,289.32x = 78,323,553.87
  5. Step 5: Solve for x
    x = 78,323,553.87/13,289.32
  6. Step 6: Final answer
    x = 5,893.72

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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.