Home / 13,571.25-18,729.41-7,983.33

Finding the Fourth Proportional to 13,571.25, 18,729.41 and 7,983.33

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Solution

The fourth proportional to 13,571.25, 18,729.41 and 7,983.33 is: 11,017.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,571.25 : 18,729.41 = 7,983.33 : x
  2. Step 2: Convert to fraction form
    13,571.25/18,729.41 = 7,983.33/x
  3. Step 3: Cross multiply
    13,571.25x = 18,729.41 × 7,983.33
  4. Step 4: Simplify right side
    13,571.25x = 149,523,060.74
  5. Step 5: Solve for x
    x = 149,523,060.74/13,571.25
  6. Step 6: Final answer
    x = 11,017.63

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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.