Home / 12,146.05-18,221.66-3,828.47

Finding the Fourth Proportional to 12,146.05, 18,221.66 and 3,828.47

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Solution

The fourth proportional to 12,146.05, 18,221.66 and 3,828.47 is: 5,743.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,146.05 : 18,221.66 = 3,828.47 : x
  2. Step 2: Convert to fraction form
    12,146.05/18,221.66 = 3,828.47/x
  3. Step 3: Cross multiply
    12,146.05x = 18,221.66 × 3,828.47
  4. Step 4: Simplify right side
    12,146.05x = 69,760,982.77
  5. Step 5: Solve for x
    x = 69,760,982.77/12,146.05
  6. Step 6: Final answer
    x = 5,743.51

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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.