Home / 54,147.70-81,235.40-20,858.83

Finding the Fourth Proportional to 54,147.70, 81,235.40 and 20,858.83

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Solution

The fourth proportional to 54,147.70, 81,235.40 and 20,858.83 is: 31,293.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,147.70 : 81,235.40 = 20,858.83 : x
  2. Step 2: Convert to fraction form
    54,147.70/81,235.40 = 20,858.83/x
  3. Step 3: Cross multiply
    54,147.70x = 81,235.40 × 20,858.83
  4. Step 4: Simplify right side
    54,147.70x = 1,694,474,992.41
  5. Step 5: Solve for x
    x = 1,694,474,992.41/54,147.70
  6. Step 6: Final answer
    x = 31,293.57

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1.5x scale

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.