Home / 20,768,796.08-31,115,921.16-12,677,608.88

Finding the Fourth Proportional to 20,768,796.08, 31,115,921.16 and 12,677,608.88

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Solution

The fourth proportional to 20,768,796.08, 31,115,921.16 and 12,677,608.88 is: 18,993,661.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768,796.08 : 31,115,921.16 = 12,677,608.88 : x
  2. Step 2: Convert to fraction form
    20,768,796.08/31,115,921.16 = 12,677,608.88/x
  3. Step 3: Cross multiply
    20,768,796.08x = 31,115,921.16 × 12,677,608.88
  4. Step 4: Simplify right side
    20,768,796.08x = 394,475,478,407,395.94
  5. Step 5: Solve for x
    x = 394,475,478,407,395.94/20,768,796.08
  6. Step 6: Final answer
    x = 18,993,661.30

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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.