Home / 28,759.56-43,135.64-21,374.78

Finding the Fourth Proportional to 28,759.56, 43,135.64 and 21,374.78

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Solution

The fourth proportional to 28,759.56, 43,135.64 and 21,374.78 is: 32,059.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,759.56 : 43,135.64 = 21,374.78 : x
  2. Step 2: Convert to fraction form
    28,759.56/43,135.64 = 21,374.78/x
  3. Step 3: Cross multiply
    28,759.56x = 43,135.64 × 21,374.78
  4. Step 4: Simplify right side
    28,759.56x = 922,014,815.16
  5. Step 5: Solve for x
    x = 922,014,815.16/28,759.56
  6. Step 6: Final answer
    x = 32,059.42

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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.