Home / 20,972,223.66-28,942,566.60-11,679,793.68

Finding the Fourth Proportional to 20,972,223.66, 28,942,566.60 and 11,679,793.68

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Solution

The fourth proportional to 20,972,223.66, 28,942,566.60 and 11,679,793.68 is: 16,118,615.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972,223.66 : 28,942,566.60 = 11,679,793.68 : x
  2. Step 2: Convert to fraction form
    20,972,223.66/28,942,566.60 = 11,679,793.68/x
  3. Step 3: Cross multiply
    20,972,223.66x = 28,942,566.60 × 11,679,793.68
  4. Step 4: Simplify right side
    20,972,223.66x = 338,043,206,457,659.12
  5. Step 5: Solve for x
    x = 338,043,206,457,659.12/20,972,223.66
  6. Step 6: Final answer
    x = 16,118,615.36

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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.