Home / 18,689,072.20-27,977,621.10-11,112,137.80

Finding the Fourth Proportional to 18,689,072.20, 27,977,621.10 and 11,112,137.80

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Solution

The fourth proportional to 18,689,072.20, 27,977,621.10 and 11,112,137.80 is: 16,634,917.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689,072.20 : 27,977,621.10 = 11,112,137.80 : x
  2. Step 2: Convert to fraction form
    18,689,072.20/27,977,621.10 = 11,112,137.80/x
  3. Step 3: Cross multiply
    18,689,072.20x = 27,977,621.10 × 11,112,137.80
  4. Step 4: Simplify right side
    18,689,072.20x = 310,891,180,979,387.62
  5. Step 5: Solve for x
    x = 310,891,180,979,387.62/18,689,072.20
  6. Step 6: Final answer
    x = 16,634,917.86

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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.