Home / 13,979.41-20,969.82-4,620.27

Finding the Fourth Proportional to 13,979.41, 20,969.82 and 4,620.27

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Solution

The fourth proportional to 13,979.41, 20,969.82 and 4,620.27 is: 6,930.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.41 : 20,969.82 = 4,620.27 : x
  2. Step 2: Convert to fraction form
    13,979.41/20,969.82 = 4,620.27/x
  3. Step 3: Cross multiply
    13,979.41x = 20,969.82 × 4,620.27
  4. Step 4: Simplify right side
    13,979.41x = 96,886,230.25
  5. Step 5: Solve for x
    x = 96,886,230.25/13,979.41
  6. Step 6: Final answer
    x = 6,930.64

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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.