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Finding the Fourth Proportional to 11,988.54, 17,992.17 and 8,316.63

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Solution

The fourth proportional to 11,988.54, 17,992.17 and 8,316.63 is: 12,481.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,988.54 : 17,992.17 = 8,316.63 : x
  2. Step 2: Convert to fraction form
    11,988.54/17,992.17 = 8,316.63/x
  3. Step 3: Cross multiply
    11,988.54x = 17,992.17 × 8,316.63
  4. Step 4: Simplify right side
    11,988.54x = 149,634,220.79
  5. Step 5: Solve for x
    x = 149,634,220.79/11,988.54
  6. Step 6: Final answer
    x = 12,481.44

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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.