Home / 19,162,021.60-28,764,027.60-11,981,663.20

Finding the Fourth Proportional to 19,162,021.60, 28,764,027.60 and 11,981,663.20

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Solution

The fourth proportional to 19,162,021.60, 28,764,027.60 and 11,981,663.20 is: 17,985,622.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,162,021.60 : 28,764,027.60 = 11,981,663.20 : x
  2. Step 2: Convert to fraction form
    19,162,021.60/28,764,027.60 = 11,981,663.20/x
  3. Step 3: Cross multiply
    19,162,021.60x = 28,764,027.60 × 11,981,663.20
  4. Step 4: Simplify right side
    19,162,021.60x = 344,640,890,978,704.31
  5. Step 5: Solve for x
    x = 344,640,890,978,704.31/19,162,021.60
  6. Step 6: Final answer
    x = 17,985,622.72

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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.