Home / 21,873,189.76-30,185,865.26-12,580,745

Finding the Fourth Proportional to 21,873,189.76, 30,185,865.26 and 12,580,745

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Solution

The fourth proportional to 21,873,189.76, 30,185,865.26 and 12,580,745 is: 17,361,924.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,873,189.76 : 30,185,865.26 = 12,580,745 : x
  2. Step 2: Convert to fraction form
    21,873,189.76/30,185,865.26 = 12,580,745/x
  3. Step 3: Cross multiply
    21,873,189.76x = 30,185,865.26 × 12,580,745
  4. Step 4: Simplify right side
    21,873,189.76x = 379,760,673,440,418.75
  5. Step 5: Solve for x
    x = 379,760,673,440,418.75/21,873,189.76
  6. Step 6: Final answer
    x = 17,361,924.69

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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.