Home / 11,405.21-15,738.84-6,369.30

Finding the Fourth Proportional to 11,405.21, 15,738.84 and 6,369.30

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Solution

The fourth proportional to 11,405.21, 15,738.84 and 6,369.30 is: 8,789.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,405.21 : 15,738.84 = 6,369.30 : x
  2. Step 2: Convert to fraction form
    11,405.21/15,738.84 = 6,369.30/x
  3. Step 3: Cross multiply
    11,405.21x = 15,738.84 × 6,369.30
  4. Step 4: Simplify right side
    11,405.21x = 100,245,393.61
  5. Step 5: Solve for x
    x = 100,245,393.61/11,405.21
  6. Step 6: Final answer
    x = 8,789.44

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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.