Home / 13,620.71-18,797.30-7,571.61

Finding the Fourth Proportional to 13,620.71, 18,797.30 and 7,571.61

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Solution

The fourth proportional to 13,620.71, 18,797.30 and 7,571.61 is: 10,449.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.71 : 18,797.30 = 7,571.61 : x
  2. Step 2: Convert to fraction form
    13,620.71/18,797.30 = 7,571.61/x
  3. Step 3: Cross multiply
    13,620.71x = 18,797.30 × 7,571.61
  4. Step 4: Simplify right side
    13,620.71x = 142,325,786.79
  5. Step 5: Solve for x
    x = 142,325,786.79/13,620.71
  6. Step 6: Final answer
    x = 10,449.22

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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.