Home / 13,972,687.40-20,917,040.70-8,289,986.60

Finding the Fourth Proportional to 13,972,687.40, 20,917,040.70 and 8,289,986.60

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Solution

The fourth proportional to 13,972,687.40, 20,917,040.70 and 8,289,986.60 is: 12,410,067.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972,687.40 : 20,917,040.70 = 8,289,986.60 : x
  2. Step 2: Convert to fraction form
    13,972,687.40/20,917,040.70 = 8,289,986.60/x
  3. Step 3: Cross multiply
    13,972,687.40x = 20,917,040.70 × 8,289,986.60
  4. Step 4: Simplify right side
    13,972,687.40x = 173,401,987,114,654.59
  5. Step 5: Solve for x
    x = 173,401,987,114,654.59/13,972,687.40
  6. Step 6: Final answer
    x = 12,410,067.02

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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.