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Finding the Fourth Proportional to 11,996.94, 17,987.70 and 4,981.79

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Solution

The fourth proportional to 11,996.94, 17,987.70 and 4,981.79 is: 7,469.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,996.94 : 17,987.70 = 4,981.79 : x
  2. Step 2: Convert to fraction form
    11,996.94/17,987.70 = 4,981.79/x
  3. Step 3: Cross multiply
    11,996.94x = 17,987.70 × 4,981.79
  4. Step 4: Simplify right side
    11,996.94x = 89,610,864.42
  5. Step 5: Solve for x
    x = 89,610,864.42/11,996.94
  6. Step 6: Final answer
    x = 7,469.48

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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.