Home / 20,212,900.80-30,319,351.20-7,430,760.60

Finding the Fourth Proportional to 20,212,900.80, 30,319,351.20 and 7,430,760.60

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Solution

The fourth proportional to 20,212,900.80, 30,319,351.20 and 7,430,760.60 is: 11,146,140.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212,900.80 : 30,319,351.20 = 7,430,760.60 : x
  2. Step 2: Convert to fraction form
    20,212,900.80/30,319,351.20 = 7,430,760.60/x
  3. Step 3: Cross multiply
    20,212,900.80x = 30,319,351.20 × 7,430,760.60
  4. Step 4: Simplify right side
    20,212,900.80x = 225,295,840,314,522.72
  5. Step 5: Solve for x
    x = 225,295,840,314,522.72/20,212,900.80
  6. Step 6: Final answer
    x = 11,146,140.90

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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.