Home / 11,918.49-17,876.90-3,153.21

Finding the Fourth Proportional to 11,918.49, 17,876.90 and 3,153.21

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Solution

The fourth proportional to 11,918.49, 17,876.90 and 3,153.21 is: 4,729.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.49 : 17,876.90 = 3,153.21 : x
  2. Step 2: Convert to fraction form
    11,918.49/17,876.90 = 3,153.21/x
  3. Step 3: Cross multiply
    11,918.49x = 17,876.90 × 3,153.21
  4. Step 4: Simplify right side
    11,918.49x = 56,369,604.08
  5. Step 5: Solve for x
    x = 56,369,604.08/11,918.49
  6. Step 6: Final answer
    x = 4,729.59

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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.