Home / 20,800,543.01-31,140,103.39-12,138,098.45

Finding the Fourth Proportional to 20,800,543.01, 31,140,103.39 and 12,138,098.45

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Solution

The fourth proportional to 20,800,543.01, 31,140,103.39 and 12,138,098.45 is: 18,171,719.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,800,543.01 : 31,140,103.39 = 12,138,098.45 : x
  2. Step 2: Convert to fraction form
    20,800,543.01/31,140,103.39 = 12,138,098.45/x
  3. Step 3: Cross multiply
    20,800,543.01x = 31,140,103.39 × 12,138,098.45
  4. Step 4: Simplify right side
    20,800,543.01x = 377,981,640,504,953
  5. Step 5: Solve for x
    x = 377,981,640,504,953/20,800,543.01
  6. Step 6: Final answer
    x = 18,171,719.86

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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.