Home / 13,188,003.80-19,782,005.70-12,628,131.80

Finding the Fourth Proportional to 13,188,003.80, 19,782,005.70 and 12,628,131.80

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Solution

The fourth proportional to 13,188,003.80, 19,782,005.70 and 12,628,131.80 is: 18,942,197.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188,003.80 : 19,782,005.70 = 12,628,131.80 : x
  2. Step 2: Convert to fraction form
    13,188,003.80/19,782,005.70 = 12,628,131.80/x
  3. Step 3: Cross multiply
    13,188,003.80x = 19,782,005.70 × 12,628,131.80
  4. Step 4: Simplify right side
    13,188,003.80x = 249,809,775,247,951.25
  5. Step 5: Solve for x
    x = 249,809,775,247,951.25/13,188,003.80
  6. Step 6: Final answer
    x = 18,942,197.70

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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.