Home / 13,138.56-19,711.18-3,778.38

Finding the Fourth Proportional to 13,138.56, 19,711.18 and 3,778.38

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Solution

The fourth proportional to 13,138.56, 19,711.18 and 3,778.38 is: 5,668.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138.56 : 19,711.18 = 3,778.38 : x
  2. Step 2: Convert to fraction form
    13,138.56/19,711.18 = 3,778.38/x
  3. Step 3: Cross multiply
    13,138.56x = 19,711.18 × 3,778.38
  4. Step 4: Simplify right side
    13,138.56x = 74,476,325.93
  5. Step 5: Solve for x
    x = 74,476,325.93/13,138.56
  6. Step 6: Final answer
    x = 5,668.53

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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.