Home / 13,251.94-19,877.83-3,391.20

Finding the Fourth Proportional to 13,251.94, 19,877.83 and 3,391.20

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Solution

The fourth proportional to 13,251.94, 19,877.83 and 3,391.20 is: 5,086.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.94 : 19,877.83 = 3,391.20 : x
  2. Step 2: Convert to fraction form
    13,251.94/19,877.83 = 3,391.20/x
  3. Step 3: Cross multiply
    13,251.94x = 19,877.83 × 3,391.20
  4. Step 4: Simplify right side
    13,251.94x = 67,409,697.10
  5. Step 5: Solve for x
    x = 67,409,697.10/13,251.94
  6. Step 6: Final answer
    x = 5,086.78

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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.