Home / 20,858,904,038.80-31,288,356,058.20-18,961,021,939.60

Finding the Fourth Proportional to 20,858,904,038.80, 31,288,356,058.20 and 18,961,021,939.60

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Solution

The fourth proportional to 20,858,904,038.80, 31,288,356,058.20 and 18,961,021,939.60 is: 28,441,532,909.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,858,904,038.80 : 31,288,356,058.20 = 18,961,021,939.60 : x
  2. Step 2: Convert to fraction form
    20,858,904,038.80/31,288,356,058.20 = 18,961,021,939.60/x
  3. Step 3: Cross multiply
    20,858,904,038.80x = 31,288,356,058.20 × 18,961,021,939.60
  4. Step 4: Simplify right side
    20,858,904,038.80x = 593,259,205,673,546,678,272
  5. Step 5: Solve for x
    x = 593,259,205,673,546,678,272/20,858,904,038.80
  6. Step 6: Final answer
    x = 28,441,532,909.40

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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.