Home / 12,420,512.80-18,630,769.20-7,369,223.20

Finding the Fourth Proportional to 12,420,512.80, 18,630,769.20 and 7,369,223.20

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Solution

The fourth proportional to 12,420,512.80, 18,630,769.20 and 7,369,223.20 is: 11,053,834.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420,512.80 : 18,630,769.20 = 7,369,223.20 : x
  2. Step 2: Convert to fraction form
    12,420,512.80/18,630,769.20 = 7,369,223.20/x
  3. Step 3: Cross multiply
    12,420,512.80x = 18,630,769.20 × 7,369,223.20
  4. Step 4: Simplify right side
    12,420,512.80x = 137,294,296,622,485.44
  5. Step 5: Solve for x
    x = 137,294,296,622,485.44/12,420,512.80
  6. Step 6: Final answer
    x = 11,053,834.80

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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.