Home / 13,991.08-20,991.48-6,205.36

Finding the Fourth Proportional to 13,991.08, 20,991.48 and 6,205.36

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Solution

The fourth proportional to 13,991.08, 20,991.48 and 6,205.36 is: 9,310.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.08 : 20,991.48 = 6,205.36 : x
  2. Step 2: Convert to fraction form
    13,991.08/20,991.48 = 6,205.36/x
  3. Step 3: Cross multiply
    13,991.08x = 20,991.48 × 6,205.36
  4. Step 4: Simplify right side
    13,991.08x = 130,259,690.33
  5. Step 5: Solve for x
    x = 130,259,690.33/13,991.08
  6. Step 6: Final answer
    x = 9,310.20

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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.