Home / 11,431.36-17,148.20-3,112.03

Finding the Fourth Proportional to 11,431.36, 17,148.20 and 3,112.03

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Solution

The fourth proportional to 11,431.36, 17,148.20 and 3,112.03 is: 4,668.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.36 : 17,148.20 = 3,112.03 : x
  2. Step 2: Convert to fraction form
    11,431.36/17,148.20 = 3,112.03/x
  3. Step 3: Cross multiply
    11,431.36x = 17,148.20 × 3,112.03
  4. Step 4: Simplify right side
    11,431.36x = 53,365,712.85
  5. Step 5: Solve for x
    x = 53,365,712.85/11,431.36
  6. Step 6: Final answer
    x = 4,668.36

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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.