Home / 11,971.11-17,958.51-4,178.10

Finding the Fourth Proportional to 11,971.11, 17,958.51 and 4,178.10

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Solution

The fourth proportional to 11,971.11, 17,958.51 and 4,178.10 is: 6,267.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,971.11 : 17,958.51 = 4,178.10 : x
  2. Step 2: Convert to fraction form
    11,971.11/17,958.51 = 4,178.10/x
  3. Step 3: Cross multiply
    11,971.11x = 17,958.51 × 4,178.10
  4. Step 4: Simplify right side
    11,971.11x = 75,032,450.63
  5. Step 5: Solve for x
    x = 75,032,450.63/11,971.11
  6. Step 6: Final answer
    x = 6,267.79

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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.