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Finding the Fourth Proportional to 28,859.38, 43,290.71 and 8,084.50

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Solution

The fourth proportional to 28,859.38, 43,290.71 and 8,084.50 is: 12,127.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,859.38 : 43,290.71 = 8,084.50 : x
  2. Step 2: Convert to fraction form
    28,859.38/43,290.71 = 8,084.50/x
  3. Step 3: Cross multiply
    28,859.38x = 43,290.71 × 8,084.50
  4. Step 4: Simplify right side
    28,859.38x = 349,983,745.00
  5. Step 5: Solve for x
    x = 349,983,745.00/28,859.38
  6. Step 6: Final answer
    x = 12,127.21

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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.