Home / 20,815,692.78-28,725,200.46-11,396,464.14

Finding the Fourth Proportional to 20,815,692.78, 28,725,200.46 and 11,396,464.14

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Solution

The fourth proportional to 20,815,692.78, 28,725,200.46 and 11,396,464.14 is: 15,726,871.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,815,692.78 : 28,725,200.46 = 11,396,464.14 : x
  2. Step 2: Convert to fraction form
    20,815,692.78/28,725,200.46 = 11,396,464.14/x
  3. Step 3: Cross multiply
    20,815,692.78x = 28,725,200.46 × 11,396,464.14
  4. Step 4: Simplify right side
    20,815,692.78x = 327,365,716,956,701.56
  5. Step 5: Solve for x
    x = 327,365,716,956,701.56/20,815,692.78
  6. Step 6: Final answer
    x = 15,726,871.09

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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.