Home / 21,040.20-29,037.21-11,968.41

Finding the Fourth Proportional to 21,040.20, 29,037.21 and 11,968.41

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Solution

The fourth proportional to 21,040.20, 29,037.21 and 11,968.41 is: 16,517.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,040.20 : 29,037.21 = 11,968.41 : x
  2. Step 2: Convert to fraction form
    21,040.20/29,037.21 = 11,968.41/x
  3. Step 3: Cross multiply
    21,040.20x = 29,037.21 × 11,968.41
  4. Step 4: Simplify right side
    21,040.20x = 347,529,234.54
  5. Step 5: Solve for x
    x = 347,529,234.54/21,040.20
  6. Step 6: Final answer
    x = 16,517.39

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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.