Home / 12,782,617.80-19,184,813.10-5,215,014.60

Finding the Fourth Proportional to 12,782,617.80, 19,184,813.10 and 5,215,014.60

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Solution

The fourth proportional to 12,782,617.80, 19,184,813.10 and 5,215,014.60 is: 7,826,963.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,782,617.80 : 19,184,813.10 = 5,215,014.60 : x
  2. Step 2: Convert to fraction form
    12,782,617.80/19,184,813.10 = 5,215,014.60/x
  3. Step 3: Cross multiply
    12,782,617.80x = 19,184,813.10 × 5,215,014.60
  4. Step 4: Simplify right side
    12,782,617.80x = 100,049,080,414,771.27
  5. Step 5: Solve for x
    x = 100,049,080,414,771.27/12,782,617.80
  6. Step 6: Final answer
    x = 7,826,963.30

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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.