Home / 43,893.20-65,807.40-18,912.80

Finding the Fourth Proportional to 43,893.20, 65,807.40 and 18,912.80

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Solution

The fourth proportional to 43,893.20, 65,807.40 and 18,912.80 is: 28,355.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,893.20 : 65,807.40 = 18,912.80 : x
  2. Step 2: Convert to fraction form
    43,893.20/65,807.40 = 18,912.80/x
  3. Step 3: Cross multiply
    43,893.20x = 65,807.40 × 18,912.80
  4. Step 4: Simplify right side
    43,893.20x = 1,244,602,194.72
  5. Step 5: Solve for x
    x = 1,244,602,194.72/43,893.20
  6. Step 6: Final answer
    x = 28,355.24

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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.