Home / 12,090,640.20-18,145,874.70-11,996,161.80

Finding the Fourth Proportional to 12,090,640.20, 18,145,874.70 and 11,996,161.80

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Solution

The fourth proportional to 12,090,640.20, 18,145,874.70 and 11,996,161.80 is: 18,004,079.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090,640.20 : 18,145,874.70 = 11,996,161.80 : x
  2. Step 2: Convert to fraction form
    12,090,640.20/18,145,874.70 = 11,996,161.80/x
  3. Step 3: Cross multiply
    12,090,640.20x = 18,145,874.70 × 11,996,161.80
  4. Step 4: Simplify right side
    12,090,640.20x = 217,680,848,903,726.47
  5. Step 5: Solve for x
    x = 217,680,848,903,726.47/12,090,640.20
  6. Step 6: Final answer
    x = 18,004,079.63

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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.