Home / 13,238.68-19,858.20-3,378.07

Finding the Fourth Proportional to 13,238.68, 19,858.20 and 3,378.07

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Solution

The fourth proportional to 13,238.68, 19,858.20 and 3,378.07 is: 5,067.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,238.68 : 19,858.20 = 3,378.07 : x
  2. Step 2: Convert to fraction form
    13,238.68/19,858.20 = 3,378.07/x
  3. Step 3: Cross multiply
    13,238.68x = 19,858.20 × 3,378.07
  4. Step 4: Simplify right side
    13,238.68x = 67,082,389.67
  5. Step 5: Solve for x
    x = 67,082,389.67/13,238.68
  6. Step 6: Final answer
    x = 5,067.15

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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.