Home / 12,161.31-18,209.07-6,305.61

Finding the Fourth Proportional to 12,161.31, 18,209.07 and 6,305.61

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Solution

The fourth proportional to 12,161.31, 18,209.07 and 6,305.61 is: 9,441.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.31 : 18,209.07 = 6,305.61 : x
  2. Step 2: Convert to fraction form
    12,161.31/18,209.07 = 6,305.61/x
  3. Step 3: Cross multiply
    12,161.31x = 18,209.07 × 6,305.61
  4. Step 4: Simplify right side
    12,161.31x = 114,819,293.88
  5. Step 5: Solve for x
    x = 114,819,293.88/12,161.31
  6. Step 6: Final answer
    x = 9,441.36

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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.