Home / 11,986-17,982.56-6,146.72

Finding the Fourth Proportional to 11,986, 17,982.56 and 6,146.72

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Solution

The fourth proportional to 11,986, 17,982.56 and 6,146.72 is: 9,221.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,986 : 17,982.56 = 6,146.72 : x
  2. Step 2: Convert to fraction form
    11,986/17,982.56 = 6,146.72/x
  3. Step 3: Cross multiply
    11,986x = 17,982.56 × 6,146.72
  4. Step 4: Simplify right side
    11,986x = 110,533,761.20
  5. Step 5: Solve for x
    x = 110,533,761.20/11,986
  6. Step 6: Final answer
    x = 9,221.91

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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.