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Finding the Fourth Proportional to 11,992.08, 17,997.54 and 8,320.08

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Solution

The fourth proportional to 11,992.08, 17,997.54 and 8,320.08 is: 12,486.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,992.08 : 17,997.54 = 8,320.08 : x
  2. Step 2: Convert to fraction form
    11,992.08/17,997.54 = 8,320.08/x
  3. Step 3: Cross multiply
    11,992.08x = 17,997.54 × 8,320.08
  4. Step 4: Simplify right side
    11,992.08x = 149,740,972.60
  5. Step 5: Solve for x
    x = 149,740,972.60/11,992.08
  6. Step 6: Final answer
    x = 12,486.66

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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.