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Finding the Fourth Proportional to 11,383, 17,082.21 and 3,987.52

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Solution

The fourth proportional to 11,383, 17,082.21 and 3,987.52 is: 5,983.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,383 : 17,082.21 = 3,987.52 : x
  2. Step 2: Convert to fraction form
    11,383/17,082.21 = 3,987.52/x
  3. Step 3: Cross multiply
    11,383x = 17,082.21 × 3,987.52
  4. Step 4: Simplify right side
    11,383x = 68,115,654.02
  5. Step 5: Solve for x
    x = 68,115,654.02/11,383
  6. Step 6: Final answer
    x = 5,983.98

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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.