Home / 12,571.53-18,857.27-3,211.55

Finding the Fourth Proportional to 12,571.53, 18,857.27 and 3,211.55

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Solution

The fourth proportional to 12,571.53, 18,857.27 and 3,211.55 is: 4,817.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,571.53 : 18,857.27 = 3,211.55 : x
  2. Step 2: Convert to fraction form
    12,571.53/18,857.27 = 3,211.55/x
  3. Step 3: Cross multiply
    12,571.53x = 18,857.27 × 3,211.55
  4. Step 4: Simplify right side
    12,571.53x = 60,560,955.12
  5. Step 5: Solve for x
    x = 60,560,955.12/12,571.53
  6. Step 6: Final answer
    x = 4,817.31

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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.