Home / 12,170,201.30-18,219,872.55-11,815,907.30

Finding the Fourth Proportional to 12,170,201.30, 18,219,872.55 and 11,815,907.30

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Solution

The fourth proportional to 12,170,201.30, 18,219,872.55 and 11,815,907.30 is: 17,689,462.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170,201.30 : 18,219,872.55 = 11,815,907.30 : x
  2. Step 2: Convert to fraction form
    12,170,201.30/18,219,872.55 = 11,815,907.30/x
  3. Step 3: Cross multiply
    12,170,201.30x = 18,219,872.55 × 11,815,907.30
  4. Step 4: Simplify right side
    12,170,201.30x = 215,284,325,068,614.62
  5. Step 5: Solve for x
    x = 215,284,325,068,614.62/12,170,201.30
  6. Step 6: Final answer
    x = 17,689,462.96

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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.