Home / 13,818.36-20,726.82-3,429.48

Finding the Fourth Proportional to 13,818.36, 20,726.82 and 3,429.48

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Solution

The fourth proportional to 13,818.36, 20,726.82 and 3,429.48 is: 5,144.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.36 : 20,726.82 = 3,429.48 : x
  2. Step 2: Convert to fraction form
    13,818.36/20,726.82 = 3,429.48/x
  3. Step 3: Cross multiply
    13,818.36x = 20,726.82 × 3,429.48
  4. Step 4: Simplify right side
    13,818.36x = 71,082,214.65
  5. Step 5: Solve for x
    x = 71,082,214.65/13,818.36
  6. Step 6: Final answer
    x = 5,144.04

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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.