Home / 11,990.05-17,986.72-4,090.45

Finding the Fourth Proportional to 11,990.05, 17,986.72 and 4,090.45

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Solution

The fourth proportional to 11,990.05, 17,986.72 and 4,090.45 is: 6,136.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.05 : 17,986.72 = 4,090.45 : x
  2. Step 2: Convert to fraction form
    11,990.05/17,986.72 = 4,090.45/x
  3. Step 3: Cross multiply
    11,990.05x = 17,986.72 × 4,090.45
  4. Step 4: Simplify right side
    11,990.05x = 73,573,714.44
  5. Step 5: Solve for x
    x = 73,573,714.44/11,990.05
  6. Step 6: Final answer
    x = 6,136.23

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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.