Home / 13,972,490.40-20,916,745.20-8,289,789.60

Finding the Fourth Proportional to 13,972,490.40, 20,916,745.20 and 8,289,789.60

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Solution

The fourth proportional to 13,972,490.40, 20,916,745.20 and 8,289,789.60 is: 12,409,771.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972,490.40 : 20,916,745.20 = 8,289,789.60 : x
  2. Step 2: Convert to fraction form
    13,972,490.40/20,916,745.20 = 8,289,789.60/x
  3. Step 3: Cross multiply
    13,972,490.40x = 20,916,745.20 × 8,289,789.60
  4. Step 4: Simplify right side
    13,972,490.40x = 173,395,416,824,809.91
  5. Step 5: Solve for x
    x = 173,395,416,824,809.91/13,972,490.40
  6. Step 6: Final answer
    x = 12,409,771.76

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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.