Home / 13,239.33-18,268.74-7,859.85

Finding the Fourth Proportional to 13,239.33, 18,268.74 and 7,859.85

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Solution

The fourth proportional to 13,239.33, 18,268.74 and 7,859.85 is: 10,845.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.33 : 18,268.74 = 7,859.85 : x
  2. Step 2: Convert to fraction form
    13,239.33/18,268.74 = 7,859.85/x
  3. Step 3: Cross multiply
    13,239.33x = 18,268.74 × 7,859.85
  4. Step 4: Simplify right side
    13,239.33x = 143,589,556.09
  5. Step 5: Solve for x
    x = 143,589,556.09/13,239.33
  6. Step 6: Final answer
    x = 10,845.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.