Home / 20,900,013.81-28,842,375.50-11,481,201.86

Finding the Fourth Proportional to 20,900,013.81, 28,842,375.50 and 11,481,201.86

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Solution

The fourth proportional to 20,900,013.81, 28,842,375.50 and 11,481,201.86 is: 15,844,254.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,900,013.81 : 28,842,375.50 = 11,481,201.86 : x
  2. Step 2: Convert to fraction form
    20,900,013.81/28,842,375.50 = 11,481,201.86/x
  3. Step 3: Cross multiply
    20,900,013.81x = 28,842,375.50 × 11,481,201.86
  4. Step 4: Simplify right side
    20,900,013.81x = 331,145,135,035,800.56
  5. Step 5: Solve for x
    x = 331,145,135,035,800.56/20,900,013.81
  6. Step 6: Final answer
    x = 15,844,254.36

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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.