Home / 12,489,550.56-18,721,564.32-7,086,787.68

Finding the Fourth Proportional to 12,489,550.56, 18,721,564.32 and 7,086,787.68

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Solution

The fourth proportional to 12,489,550.56, 18,721,564.32 and 7,086,787.68 is: 10,622,940.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489,550.56 : 18,721,564.32 = 7,086,787.68 : x
  2. Step 2: Convert to fraction form
    12,489,550.56/18,721,564.32 = 7,086,787.68/x
  3. Step 3: Cross multiply
    12,489,550.56x = 18,721,564.32 × 7,086,787.68
  4. Step 4: Simplify right side
    12,489,550.56x = 132,675,751,373,303.58
  5. Step 5: Solve for x
    x = 132,675,751,373,303.58/12,489,550.56
  6. Step 6: Final answer
    x = 10,622,940.41

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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.