Home / 13,991.31-20,986.97-3,602.25

Finding the Fourth Proportional to 13,991.31, 20,986.97 and 3,602.25

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Solution

The fourth proportional to 13,991.31, 20,986.97 and 3,602.25 is: 5,403.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.31 : 20,986.97 = 3,602.25 : x
  2. Step 2: Convert to fraction form
    13,991.31/20,986.97 = 3,602.25/x
  3. Step 3: Cross multiply
    13,991.31x = 20,986.97 × 3,602.25
  4. Step 4: Simplify right side
    13,991.31x = 75,600,294.67
  5. Step 5: Solve for x
    x = 75,600,294.67/13,991.31
  6. Step 6: Final answer
    x = 5,403.38

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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.