Home / 20,720,616.11-31,080,902.28-7,072,629.85

Finding the Fourth Proportional to 20,720,616.11, 31,080,902.28 and 7,072,629.85

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Solution

The fourth proportional to 20,720,616.11, 31,080,902.28 and 7,072,629.85 is: 10,608,937.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,720,616.11 : 31,080,902.28 = 7,072,629.85 : x
  2. Step 2: Convert to fraction form
    20,720,616.11/31,080,902.28 = 7,072,629.85/x
  3. Step 3: Cross multiply
    20,720,616.11x = 31,080,902.28 × 7,072,629.85
  4. Step 4: Simplify right side
    20,720,616.11x = 219,823,717,242,789.84
  5. Step 5: Solve for x
    x = 219,823,717,242,789.84/20,720,616.11
  6. Step 6: Final answer
    x = 10,608,937.31

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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.