Home / 8,138,829.20-12,208,243.80-7,674,342.80

Finding the Fourth Proportional to 8,138,829.20, 12,208,243.80 and 7,674,342.80

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Solution

The fourth proportional to 8,138,829.20, 12,208,243.80 and 7,674,342.80 is: 11,511,514.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138,829.20 : 12,208,243.80 = 7,674,342.80 : x
  2. Step 2: Convert to fraction form
    8,138,829.20/12,208,243.80 = 7,674,342.80/x
  3. Step 3: Cross multiply
    8,138,829.20x = 12,208,243.80 × 7,674,342.80
  4. Step 4: Simplify right side
    8,138,829.20x = 93,690,247,907,174.64
  5. Step 5: Solve for x
    x = 93,690,247,907,174.64/8,138,829.20
  6. Step 6: Final answer
    x = 11,511,514.20

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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.