Home / 11,481.57-17,220.09-3,159.45

Finding the Fourth Proportional to 11,481.57, 17,220.09 and 3,159.45

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Solution

The fourth proportional to 11,481.57, 17,220.09 and 3,159.45 is: 4,738.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,481.57 : 17,220.09 = 3,159.45 : x
  2. Step 2: Convert to fraction form
    11,481.57/17,220.09 = 3,159.45/x
  3. Step 3: Cross multiply
    11,481.57x = 17,220.09 × 3,159.45
  4. Step 4: Simplify right side
    11,481.57x = 54,406,013.35
  5. Step 5: Solve for x
    x = 54,406,013.35/11,481.57
  6. Step 6: Final answer
    x = 4,738.55

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1.5x scale

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.