Home / 13,340.91-20,018.39-5,449.26

Finding the Fourth Proportional to 13,340.91, 20,018.39 and 5,449.26

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Solution

The fourth proportional to 13,340.91, 20,018.39 and 5,449.26 is: 8,176.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.91 : 20,018.39 = 5,449.26 : x
  2. Step 2: Convert to fraction form
    13,340.91/20,018.39 = 5,449.26/x
  3. Step 3: Cross multiply
    13,340.91x = 20,018.39 × 5,449.26
  4. Step 4: Simplify right side
    13,340.91x = 109,085,384.65
  5. Step 5: Solve for x
    x = 109,085,384.65/13,340.91
  6. Step 6: Final answer
    x = 8,176.76

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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.