Home / 12,139.93-18,206.65-3,375.33

Finding the Fourth Proportional to 12,139.93, 18,206.65 and 3,375.33

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Solution

The fourth proportional to 12,139.93, 18,206.65 and 3,375.33 is: 5,062.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139.93 : 18,206.65 = 3,375.33 : x
  2. Step 2: Convert to fraction form
    12,139.93/18,206.65 = 3,375.33/x
  3. Step 3: Cross multiply
    12,139.93x = 18,206.65 × 3,375.33
  4. Step 4: Simplify right side
    12,139.93x = 61,453,451.94
  5. Step 5: Solve for x
    x = 61,453,451.94/12,139.93
  6. Step 6: Final answer
    x = 5,062.09

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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.