Home / 11,855.21-17,782.83-3,090.15

Finding the Fourth Proportional to 11,855.21, 17,782.83 and 3,090.15

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Solution

The fourth proportional to 11,855.21, 17,782.83 and 3,090.15 is: 4,635.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,855.21 : 17,782.83 = 3,090.15 : x
  2. Step 2: Convert to fraction form
    11,855.21/17,782.83 = 3,090.15/x
  3. Step 3: Cross multiply
    11,855.21x = 17,782.83 × 3,090.15
  4. Step 4: Simplify right side
    11,855.21x = 54,951,612.12
  5. Step 5: Solve for x
    x = 54,951,612.12/11,855.21
  6. Step 6: Final answer
    x = 4,635.23

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Similar ratio
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1.5x scale

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.