Home / 28,100,836.80-42,123,261.60-12,928,305.60

Finding the Fourth Proportional to 28,100,836.80, 42,123,261.60 and 12,928,305.60

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Solution

The fourth proportional to 28,100,836.80, 42,123,261.60 and 12,928,305.60 is: 19,379,579.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,100,836.80 : 42,123,261.60 = 12,928,305.60 : x
  2. Step 2: Convert to fraction form
    28,100,836.80/42,123,261.60 = 12,928,305.60/x
  3. Step 3: Cross multiply
    28,100,836.80x = 42,123,261.60 × 12,928,305.60
  4. Step 4: Simplify right side
    28,100,836.80x = 544,582,398,833,544.94
  5. Step 5: Solve for x
    x = 544,582,398,833,544.94/28,100,836.80
  6. Step 6: Final answer
    x = 19,379,579.43

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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.