Home / 11,918.75-17,876.09-3,154.55

Finding the Fourth Proportional to 11,918.75, 17,876.09 and 3,154.55

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Solution

The fourth proportional to 11,918.75, 17,876.09 and 3,154.55 is: 4,731.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.75 : 17,876.09 = 3,154.55 : x
  2. Step 2: Convert to fraction form
    11,918.75/17,876.09 = 3,154.55/x
  3. Step 3: Cross multiply
    11,918.75x = 17,876.09 × 3,154.55
  4. Step 4: Simplify right side
    11,918.75x = 56,390,938.22
  5. Step 5: Solve for x
    x = 56,390,938.22/11,918.75
  6. Step 6: Final answer
    x = 4,731.28

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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.