Home / 20,213,214.80-30,319,822.20-7,431,074.60

Finding the Fourth Proportional to 20,213,214.80, 30,319,822.20 and 7,431,074.60

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Solution

The fourth proportional to 20,213,214.80, 30,319,822.20 and 7,431,074.60 is: 11,146,611.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,213,214.80 : 30,319,822.20 = 7,431,074.60 : x
  2. Step 2: Convert to fraction form
    20,213,214.80/30,319,822.20 = 7,431,074.60/x
  3. Step 3: Cross multiply
    20,213,214.80x = 30,319,822.20 × 7,431,074.60
  4. Step 4: Simplify right side
    20,213,214.80x = 225,308,860,626,936.09
  5. Step 5: Solve for x
    x = 225,308,860,626,936.09/20,213,214.80
  6. Step 6: Final answer
    x = 11,146,611.90

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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.