Home / 13,979.94-20,969.70-3,450.08

Finding the Fourth Proportional to 13,979.94, 20,969.70 and 3,450.08

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Solution

The fourth proportional to 13,979.94, 20,969.70 and 3,450.08 is: 5,175.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.94 : 20,969.70 = 3,450.08 : x
  2. Step 2: Convert to fraction form
    13,979.94/20,969.70 = 3,450.08/x
  3. Step 3: Cross multiply
    13,979.94x = 20,969.70 × 3,450.08
  4. Step 4: Simplify right side
    13,979.94x = 72,347,037.73
  5. Step 5: Solve for x
    x = 72,347,037.73/13,979.94
  6. Step 6: Final answer
    x = 5,175.06

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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.