Home / 19,321,231.39-28,981,847.09-7,190,379.79

Finding the Fourth Proportional to 19,321,231.39, 28,981,847.09 and 7,190,379.79

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Solution

The fourth proportional to 19,321,231.39, 28,981,847.09 and 7,190,379.79 is: 10,785,569.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,321,231.39 : 28,981,847.09 = 7,190,379.79 : x
  2. Step 2: Convert to fraction form
    19,321,231.39/28,981,847.09 = 7,190,379.79/x
  3. Step 3: Cross multiply
    19,321,231.39x = 28,981,847.09 × 7,190,379.79
  4. Step 4: Simplify right side
    19,321,231.39x = 208,390,487,538,327.62
  5. Step 5: Solve for x
    x = 208,390,487,538,327.62/19,321,231.39
  6. Step 6: Final answer
    x = 10,785,569.69

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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.