Home / 12,259,670.72-18,379,963.40-7,932,578.22

Finding the Fourth Proportional to 12,259,670.72, 18,379,963.40 and 7,932,578.22

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Solution

The fourth proportional to 12,259,670.72, 18,379,963.40 and 7,932,578.22 is: 11,892,692.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,259,670.72 : 18,379,963.40 = 7,932,578.22 : x
  2. Step 2: Convert to fraction form
    12,259,670.72/18,379,963.40 = 7,932,578.22/x
  3. Step 3: Cross multiply
    12,259,670.72x = 18,379,963.40 × 7,932,578.22
  4. Step 4: Simplify right side
    12,259,670.72x = 145,800,497,311,574.25
  5. Step 5: Solve for x
    x = 145,800,497,311,574.25/12,259,670.72
  6. Step 6: Final answer
    x = 11,892,692.77

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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.