Home / 21,241,023.75-29,309,990.67-13,397,573.40

Finding the Fourth Proportional to 21,241,023.75, 29,309,990.67 and 13,397,573.40

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Solution

The fourth proportional to 21,241,023.75, 29,309,990.67 and 13,397,573.40 is: 18,486,997.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,241,023.75 : 29,309,990.67 = 13,397,573.40 : x
  2. Step 2: Convert to fraction form
    21,241,023.75/29,309,990.67 = 13,397,573.40/x
  3. Step 3: Cross multiply
    21,241,023.75x = 29,309,990.67 × 13,397,573.40
  4. Step 4: Simplify right side
    21,241,023.75x = 392,682,751,468,975.31
  5. Step 5: Solve for x
    x = 392,682,751,468,975.31/21,241,023.75
  6. Step 6: Final answer
    x = 18,486,997.43

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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.