Home / 13,857,761.20-20,763,022.20-11,826,475.60

Finding the Fourth Proportional to 13,857,761.20, 20,763,022.20 and 11,826,475.60

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Solution

The fourth proportional to 13,857,761.20, 20,763,022.20 and 11,826,475.60 is: 17,719,555.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857,761.20 : 20,763,022.20 = 11,826,475.60 : x
  2. Step 2: Convert to fraction form
    13,857,761.20/20,763,022.20 = 11,826,475.60/x
  3. Step 3: Cross multiply
    13,857,761.20x = 20,763,022.20 × 11,826,475.60
  4. Step 4: Simplify right side
    13,857,761.20x = 245,553,375,430,558.31
  5. Step 5: Solve for x
    x = 245,553,375,430,558.31/13,857,761.20
  6. Step 6: Final answer
    x = 17,719,555.99

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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.