Home / 20,618,529.51-28,451,905.83-11,917,265.70

Finding the Fourth Proportional to 20,618,529.51, 28,451,905.83 and 11,917,265.70

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Solution

The fourth proportional to 20,618,529.51, 28,451,905.83 and 11,917,265.70 is: 16,444,864.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618,529.51 : 28,451,905.83 = 11,917,265.70 : x
  2. Step 2: Convert to fraction form
    20,618,529.51/28,451,905.83 = 11,917,265.70/x
  3. Step 3: Cross multiply
    20,618,529.51x = 28,451,905.83 × 11,917,265.70
  4. Step 4: Simplify right side
    20,618,529.51x = 339,068,921,447,489
  5. Step 5: Solve for x
    x = 339,068,921,447,489/20,618,529.51
  6. Step 6: Final answer
    x = 16,444,864.38

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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.