Home / 28,107.60-38,787.44-16,172.78

Finding the Fourth Proportional to 28,107.60, 38,787.44 and 16,172.78

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Solution

The fourth proportional to 28,107.60, 38,787.44 and 16,172.78 is: 22,317.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,107.60 : 38,787.44 = 16,172.78 : x
  2. Step 2: Convert to fraction form
    28,107.60/38,787.44 = 16,172.78/x
  3. Step 3: Cross multiply
    28,107.60x = 38,787.44 × 16,172.78
  4. Step 4: Simplify right side
    28,107.60x = 627,300,733.88
  5. Step 5: Solve for x
    x = 627,300,733.88/28,107.60
  6. Step 6: Final answer
    x = 22,317.83

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1.5x scale

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.