Home / 12,809,986.20-19,214,979.30-12,257,112.60

Finding the Fourth Proportional to 12,809,986.20, 19,214,979.30 and 12,257,112.60

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Solution

The fourth proportional to 12,809,986.20, 19,214,979.30 and 12,257,112.60 is: 18,385,668.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,809,986.20 : 19,214,979.30 = 12,257,112.60 : x
  2. Step 2: Convert to fraction form
    12,809,986.20/19,214,979.30 = 12,257,112.60/x
  3. Step 3: Cross multiply
    12,809,986.20x = 19,214,979.30 × 12,257,112.60
  4. Step 4: Simplify right side
    12,809,986.20x = 235,520,164,886,769.19
  5. Step 5: Solve for x
    x = 235,520,164,886,769.19/12,809,986.20
  6. Step 6: Final answer
    x = 18,385,668.90

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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.