Home / 13,388.13-20,083.41-5,488.81

Finding the Fourth Proportional to 13,388.13, 20,083.41 and 5,488.81

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Solution

The fourth proportional to 13,388.13, 20,083.41 and 5,488.81 is: 8,233.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.13 : 20,083.41 = 5,488.81 : x
  2. Step 2: Convert to fraction form
    13,388.13/20,083.41 = 5,488.81/x
  3. Step 3: Cross multiply
    13,388.13x = 20,083.41 × 5,488.81
  4. Step 4: Simplify right side
    13,388.13x = 110,233,971.43
  5. Step 5: Solve for x
    x = 110,233,971.43/13,388.13
  6. Step 6: Final answer
    x = 8,233.71

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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.