Home / 21,489,893.31-29,674,485.43-20,794,981.23

Finding the Fourth Proportional to 21,489,893.31, 29,674,485.43 and 20,794,981.23

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Solution

The fourth proportional to 21,489,893.31, 29,674,485.43 and 20,794,981.23 is: 28,714,910.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,489,893.31 : 29,674,485.43 = 20,794,981.23 : x
  2. Step 2: Convert to fraction form
    21,489,893.31/29,674,485.43 = 20,794,981.23/x
  3. Step 3: Cross multiply
    21,489,893.31x = 29,674,485.43 × 20,794,981.23
  4. Step 4: Simplify right side
    21,489,893.31x = 617,080,367,552,014.88
  5. Step 5: Solve for x
    x = 617,080,367,552,014.88/21,489,893.31
  6. Step 6: Final answer
    x = 28,714,910.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.