Home / 20,213,198.80-30,319,798.20-7,431,058.60

Finding the Fourth Proportional to 20,213,198.80, 30,319,798.20 and 7,431,058.60

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Solution

The fourth proportional to 20,213,198.80, 30,319,798.20 and 7,431,058.60 is: 11,146,587.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,213,198.80 : 30,319,798.20 = 7,431,058.60 : x
  2. Step 2: Convert to fraction form
    20,213,198.80/30,319,798.20 = 7,431,058.60/x
  3. Step 3: Cross multiply
    20,213,198.80x = 30,319,798.20 × 7,431,058.60
  4. Step 4: Simplify right side
    20,213,198.80x = 225,308,197,164,374.50
  5. Step 5: Solve for x
    x = 225,308,197,164,374.50/20,213,198.80
  6. Step 6: Final answer
    x = 11,146,587.90

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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.