Home / 13,251.56-19,877.24-3,390.80

Finding the Fourth Proportional to 13,251.56, 19,877.24 and 3,390.80

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Solution

The fourth proportional to 13,251.56, 19,877.24 and 3,390.80 is: 5,086.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.56 : 19,877.24 = 3,390.80 : x
  2. Step 2: Convert to fraction form
    13,251.56/19,877.24 = 3,390.80/x
  3. Step 3: Cross multiply
    13,251.56x = 19,877.24 × 3,390.80
  4. Step 4: Simplify right side
    13,251.56x = 67,399,745.39
  5. Step 5: Solve for x
    x = 67,399,745.39/13,251.56
  6. Step 6: Final answer
    x = 5,086.17

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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.