Home / 11,945.84-17,918.70-3,180.75

Finding the Fourth Proportional to 11,945.84, 17,918.70 and 3,180.75

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Solution

The fourth proportional to 11,945.84, 17,918.70 and 3,180.75 is: 4,771.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,945.84 : 17,918.70 = 3,180.75 : x
  2. Step 2: Convert to fraction form
    11,945.84/17,918.70 = 3,180.75/x
  3. Step 3: Cross multiply
    11,945.84x = 17,918.70 × 3,180.75
  4. Step 4: Simplify right side
    11,945.84x = 56,994,905.03
  5. Step 5: Solve for x
    x = 56,994,905.03/11,945.84
  6. Step 6: Final answer
    x = 4,771.11

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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.