Home / 13,712.33-20,558.39-5,388.05

Finding the Fourth Proportional to 13,712.33, 20,558.39 and 5,388.05

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Solution

The fourth proportional to 13,712.33, 20,558.39 and 5,388.05 is: 8,078.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.33 : 20,558.39 = 5,388.05 : x
  2. Step 2: Convert to fraction form
    13,712.33/20,558.39 = 5,388.05/x
  3. Step 3: Cross multiply
    13,712.33x = 20,558.39 × 5,388.05
  4. Step 4: Simplify right side
    13,712.33x = 110,769,503.51
  5. Step 5: Solve for x
    x = 110,769,503.51/13,712.33
  6. Step 6: Final answer
    x = 8,078.10

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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.