Home / 12,571.55-18,859.64-4,138.54

Finding the Fourth Proportional to 12,571.55, 18,859.64 and 4,138.54

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Solution

The fourth proportional to 12,571.55, 18,859.64 and 4,138.54 is: 6,208.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,571.55 : 18,859.64 = 4,138.54 : x
  2. Step 2: Convert to fraction form
    12,571.55/18,859.64 = 4,138.54/x
  3. Step 3: Cross multiply
    12,571.55x = 18,859.64 × 4,138.54
  4. Step 4: Simplify right side
    12,571.55x = 78,051,306.68
  5. Step 5: Solve for x
    x = 78,051,306.68/12,571.55
  6. Step 6: Final answer
    x = 6,208.57

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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.