Home / 13,826.21-19,081.68-7,859.33

Finding the Fourth Proportional to 13,826.21, 19,081.68 and 7,859.33

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Solution

The fourth proportional to 13,826.21, 19,081.68 and 7,859.33 is: 10,846.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,826.21 : 19,081.68 = 7,859.33 : x
  2. Step 2: Convert to fraction form
    13,826.21/19,081.68 = 7,859.33/x
  3. Step 3: Cross multiply
    13,826.21x = 19,081.68 × 7,859.33
  4. Step 4: Simplify right side
    13,826.21x = 149,969,220.07
  5. Step 5: Solve for x
    x = 149,969,220.07/13,826.21
  6. Step 6: Final answer
    x = 10,846.73

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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.