Home / 13,322.25-19,986.66-3,961.89

Finding the Fourth Proportional to 13,322.25, 19,986.66 and 3,961.89

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Solution

The fourth proportional to 13,322.25, 19,986.66 and 3,961.89 is: 5,943.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,322.25 : 19,986.66 = 3,961.89 : x
  2. Step 2: Convert to fraction form
    13,322.25/19,986.66 = 3,961.89/x
  3. Step 3: Cross multiply
    13,322.25x = 19,986.66 × 3,961.89
  4. Step 4: Simplify right side
    13,322.25x = 79,184,948.39
  5. Step 5: Solve for x
    x = 79,184,948.39/13,322.25
  6. Step 6: Final answer
    x = 5,943.81

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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.