Home / 20,721,865.80-31,080,077.10-6,346,374.60

Finding the Fourth Proportional to 20,721,865.80, 31,080,077.10 and 6,346,374.60

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Solution

The fourth proportional to 20,721,865.80, 31,080,077.10 and 6,346,374.60 is: 9,518,728.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,721,865.80 : 31,080,077.10 = 6,346,374.60 : x
  2. Step 2: Convert to fraction form
    20,721,865.80/31,080,077.10 = 6,346,374.60/x
  3. Step 3: Cross multiply
    20,721,865.80x = 31,080,077.10 × 6,346,374.60
  4. Step 4: Simplify right side
    20,721,865.80x = 197,245,811,873,481.66
  5. Step 5: Solve for x
    x = 197,245,811,873,481.66/20,721,865.80
  6. Step 6: Final answer
    x = 9,518,728.37

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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.