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Finding the Fourth Proportional to 18,012.16, 26,982.01 and 8,979.02

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Solution

The fourth proportional to 18,012.16, 26,982.01 and 8,979.02 is: 13,450.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,012.16 : 26,982.01 = 8,979.02 : x
  2. Step 2: Convert to fraction form
    18,012.16/26,982.01 = 8,979.02/x
  3. Step 3: Cross multiply
    18,012.16x = 26,982.01 × 8,979.02
  4. Step 4: Simplify right side
    18,012.16x = 242,272,007.43
  5. Step 5: Solve for x
    x = 242,272,007.43/18,012.16
  6. Step 6: Final answer
    x = 13,450.47

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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.