Home / 20,391,321.40-30,603,712.65-20,231,889.10

Finding the Fourth Proportional to 20,391,321.40, 30,603,712.65 and 20,231,889.10

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Solution

The fourth proportional to 20,391,321.40, 30,603,712.65 and 20,231,889.10 is: 30,364,433.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391,321.40 : 30,603,712.65 = 20,231,889.10 : x
  2. Step 2: Convert to fraction form
    20,391,321.40/30,603,712.65 = 20,231,889.10/x
  3. Step 3: Cross multiply
    20,391,321.40x = 30,603,712.65 × 20,231,889.10
  4. Step 4: Simplify right side
    20,391,321.40x = 619,170,920,383,067.12
  5. Step 5: Solve for x
    x = 619,170,920,383,067.12/20,391,321.40
  6. Step 6: Final answer
    x = 30,364,433.39

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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.