Home / 13,340.66-20,012-3,979.94

Finding the Fourth Proportional to 13,340.66, 20,012 and 3,979.94

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Solution

The fourth proportional to 13,340.66, 20,012 and 3,979.94 is: 5,970.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.66 : 20,012 = 3,979.94 : x
  2. Step 2: Convert to fraction form
    13,340.66/20,012 = 3,979.94/x
  3. Step 3: Cross multiply
    13,340.66x = 20,012 × 3,979.94
  4. Step 4: Simplify right side
    13,340.66x = 79,646,559.28
  5. Step 5: Solve for x
    x = 79,646,559.28/13,340.66
  6. Step 6: Final answer
    x = 5,970.21

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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.