Home / 20,721,867.80-31,080,080.10-6,346,376.60

Finding the Fourth Proportional to 20,721,867.80, 31,080,080.10 and 6,346,376.60

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Solution

The fourth proportional to 20,721,867.80, 31,080,080.10 and 6,346,376.60 is: 9,518,731.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,721,867.80 : 31,080,080.10 = 6,346,376.60 : x
  2. Step 2: Convert to fraction form
    20,721,867.80/31,080,080.10 = 6,346,376.60/x
  3. Step 3: Cross multiply
    20,721,867.80x = 31,080,080.10 × 6,346,376.60
  4. Step 4: Simplify right side
    20,721,867.80x = 197,245,893,072,765.66
  5. Step 5: Solve for x
    x = 197,245,893,072,765.66/20,721,867.80
  6. Step 6: Final answer
    x = 9,518,731.37

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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.