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Finding the Fourth Proportional to 28,911.54, 43,367.31 and 8,134.98

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Solution

The fourth proportional to 28,911.54, 43,367.31 and 8,134.98 is: 12,202.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,911.54 : 43,367.31 = 8,134.98 : x
  2. Step 2: Convert to fraction form
    28,911.54/43,367.31 = 8,134.98/x
  3. Step 3: Cross multiply
    28,911.54x = 43,367.31 × 8,134.98
  4. Step 4: Simplify right side
    28,911.54x = 352,792,199.50
  5. Step 5: Solve for x
    x = 352,792,199.50/28,911.54
  6. Step 6: Final answer
    x = 12,202.47

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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.