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Finding the Fourth Proportional to 18,979,601.10, 28,469,401.65 and 18,097,802.70

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Solution

The fourth proportional to 18,979,601.10, 28,469,401.65 and 18,097,802.70 is: 27,146,704.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979,601.10 : 28,469,401.65 = 18,097,802.70 : x
  2. Step 2: Convert to fraction form
    18,979,601.10/28,469,401.65 = 18,097,802.70/x
  3. Step 3: Cross multiply
    18,979,601.10x = 28,469,401.65 × 18,097,802.70
  4. Step 4: Simplify right side
    18,979,601.10x = 515,233,614,048,754.44
  5. Step 5: Solve for x
    x = 515,233,614,048,754.44/18,979,601.10
  6. Step 6: Final answer
    x = 27,146,704.05

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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.