Home / 11,872.98-17,811.90-4,080.78

Finding the Fourth Proportional to 11,872.98, 17,811.90 and 4,080.78

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Solution

The fourth proportional to 11,872.98, 17,811.90 and 4,080.78 is: 6,122.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,872.98 : 17,811.90 = 4,080.78 : x
  2. Step 2: Convert to fraction form
    11,872.98/17,811.90 = 4,080.78/x
  3. Step 3: Cross multiply
    11,872.98x = 17,811.90 × 4,080.78
  4. Step 4: Simplify right side
    11,872.98x = 72,686,445.28
  5. Step 5: Solve for x
    x = 72,686,445.28/11,872.98
  6. Step 6: Final answer
    x = 6,122.01

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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.