Home / 20,956,431.70-28,904,286.81-18,504,717.22

Finding the Fourth Proportional to 20,956,431.70, 28,904,286.81 and 18,504,717.22

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Solution

The fourth proportional to 20,956,431.70, 28,904,286.81 and 18,504,717.22 is: 25,522,744.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956,431.70 : 28,904,286.81 = 18,504,717.22 : x
  2. Step 2: Convert to fraction form
    20,956,431.70/28,904,286.81 = 18,504,717.22/x
  3. Step 3: Cross multiply
    20,956,431.70x = 28,904,286.81 × 18,504,717.22
  4. Step 4: Simplify right side
    20,956,431.70x = 534,865,653,864,825.81
  5. Step 5: Solve for x
    x = 534,865,653,864,825.81/20,956,431.70
  6. Step 6: Final answer
    x = 25,522,744.59

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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.