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Finding the Fourth Proportional to 11,817.91, 17,751.45 and 9,972.58

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Solution

The fourth proportional to 11,817.91, 17,751.45 and 9,972.58 is: 14,979.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,817.91 : 17,751.45 = 9,972.58 : x
  2. Step 2: Convert to fraction form
    11,817.91/17,751.45 = 9,972.58/x
  3. Step 3: Cross multiply
    11,817.91x = 17,751.45 × 9,972.58
  4. Step 4: Simplify right side
    11,817.91x = 177,027,755.24
  5. Step 5: Solve for x
    x = 177,027,755.24/11,817.91
  6. Step 6: Final answer
    x = 14,979.62

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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.