Home / 13,338.13-18,406.13-7,369.67

Finding the Fourth Proportional to 13,338.13, 18,406.13 and 7,369.67

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Solution

The fourth proportional to 13,338.13, 18,406.13 and 7,369.67 is: 10,169.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,338.13 : 18,406.13 = 7,369.67 : x
  2. Step 2: Convert to fraction form
    13,338.13/18,406.13 = 7,369.67/x
  3. Step 3: Cross multiply
    13,338.13x = 18,406.13 × 7,369.67
  4. Step 4: Simplify right side
    13,338.13x = 135,647,067.23
  5. Step 5: Solve for x
    x = 135,647,067.23/13,338.13
  6. Step 6: Final answer
    x = 10,169.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.