Home / 13,181,700.80-19,784,215.20-7,783,601.60

Finding the Fourth Proportional to 13,181,700.80, 19,784,215.20 and 7,783,601.60

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Solution

The fourth proportional to 13,181,700.80, 19,784,215.20 and 7,783,601.60 is: 11,682,289.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181,700.80 : 19,784,215.20 = 7,783,601.60 : x
  2. Step 2: Convert to fraction form
    13,181,700.80/19,784,215.20 = 7,783,601.60/x
  3. Step 3: Cross multiply
    13,181,700.80x = 19,784,215.20 × 7,783,601.60
  4. Step 4: Simplify right side
    13,181,700.80x = 153,992,449,085,464.31
  5. Step 5: Solve for x
    x = 153,992,449,085,464.31/13,181,700.80
  6. Step 6: Final answer
    x = 11,682,289.82

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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.