Home / 20,590,881.12-28,415,404.90-11,298,512.20

Finding the Fourth Proportional to 20,590,881.12, 28,415,404.90 and 11,298,512.20

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Solution

The fourth proportional to 20,590,881.12, 28,415,404.90 and 11,298,512.20 is: 15,591,940.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590,881.12 : 28,415,404.90 = 11,298,512.20 : x
  2. Step 2: Convert to fraction form
    20,590,881.12/28,415,404.90 = 11,298,512.20/x
  3. Step 3: Cross multiply
    20,590,881.12x = 28,415,404.90 × 11,298,512.20
  4. Step 4: Simplify right side
    20,590,881.12x = 321,051,798,930,589.75
  5. Step 5: Solve for x
    x = 321,051,798,930,589.75/20,590,881.12
  6. Step 6: Final answer
    x = 15,591,940.78

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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.