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Finding the Fourth Proportional to 28,881.12, 43,323.30 and 8,103

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Solution

The fourth proportional to 28,881.12, 43,323.30 and 8,103 is: 12,154.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,881.12 : 43,323.30 = 8,103 : x
  2. Step 2: Convert to fraction form
    28,881.12/43,323.30 = 8,103/x
  3. Step 3: Cross multiply
    28,881.12x = 43,323.30 × 8,103
  4. Step 4: Simplify right side
    28,881.12x = 351,048,699.90
  5. Step 5: Solve for x
    x = 351,048,699.90/28,881.12
  6. Step 6: Final answer
    x = 12,154.95

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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.