Home / 11,855.43-17,784.09-3,090.42

Finding the Fourth Proportional to 11,855.43, 17,784.09 and 3,090.42

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Solution

The fourth proportional to 11,855.43, 17,784.09 and 3,090.42 is: 4,635.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,855.43 : 17,784.09 = 3,090.42 : x
  2. Step 2: Convert to fraction form
    11,855.43/17,784.09 = 3,090.42/x
  3. Step 3: Cross multiply
    11,855.43x = 17,784.09 × 3,090.42
  4. Step 4: Simplify right side
    11,855.43x = 54,960,307.42
  5. Step 5: Solve for x
    x = 54,960,307.42/11,855.43
  6. Step 6: Final answer
    x = 4,635.88

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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.