Home / 20,682,160.65-28,540,066.39-12,422,571.06

Finding the Fourth Proportional to 20,682,160.65, 28,540,066.39 and 12,422,571.06

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Solution

The fourth proportional to 20,682,160.65, 28,540,066.39 and 12,422,571.06 is: 17,142,358.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682,160.65 : 28,540,066.39 = 12,422,571.06 : x
  2. Step 2: Convert to fraction form
    20,682,160.65/28,540,066.39 = 12,422,571.06/x
  3. Step 3: Cross multiply
    20,682,160.65x = 28,540,066.39 × 12,422,571.06
  4. Step 4: Simplify right side
    20,682,160.65x = 354,541,002,786,892.69
  5. Step 5: Solve for x
    x = 354,541,002,786,892.69/20,682,160.65
  6. Step 6: Final answer
    x = 17,142,358.03

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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.