Home / 13,998.72-20,991.60-5,233.44

Finding the Fourth Proportional to 13,998.72, 20,991.60 and 5,233.44

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Solution

The fourth proportional to 13,998.72, 20,991.60 and 5,233.44 is: 7,847.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.72 : 20,991.60 = 5,233.44 : x
  2. Step 2: Convert to fraction form
    13,998.72/20,991.60 = 5,233.44/x
  3. Step 3: Cross multiply
    13,998.72x = 20,991.60 × 5,233.44
  4. Step 4: Simplify right side
    13,998.72x = 109,858,279.10
  5. Step 5: Solve for x
    x = 109,858,279.10/13,998.72
  6. Step 6: Final answer
    x = 7,847.74

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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.