Home / 28,914.40-43,371.60-8,137.90

Finding the Fourth Proportional to 28,914.40, 43,371.60 and 8,137.90

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Solution

The fourth proportional to 28,914.40, 43,371.60 and 8,137.90 is: 12,206.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,914.40 : 43,371.60 = 8,137.90 : x
  2. Step 2: Convert to fraction form
    28,914.40/43,371.60 = 8,137.90/x
  3. Step 3: Cross multiply
    28,914.40x = 43,371.60 × 8,137.90
  4. Step 4: Simplify right side
    28,914.40x = 352,953,743.64
  5. Step 5: Solve for x
    x = 352,953,743.64/28,914.40
  6. Step 6: Final answer
    x = 12,206.85

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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.