Home / 13,581.19-20,369.01-3,719.71

Finding the Fourth Proportional to 13,581.19, 20,369.01 and 3,719.71

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Solution

The fourth proportional to 13,581.19, 20,369.01 and 3,719.71 is: 5,578.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.19 : 20,369.01 = 3,719.71 : x
  2. Step 2: Convert to fraction form
    13,581.19/20,369.01 = 3,719.71/x
  3. Step 3: Cross multiply
    13,581.19x = 20,369.01 × 3,719.71
  4. Step 4: Simplify right side
    13,581.19x = 75,766,708.34
  5. Step 5: Solve for x
    x = 75,766,708.34/13,581.19
  6. Step 6: Final answer
    x = 5,578.80

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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.