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Finding the Fourth Proportional to 28,807.60, 43,170.90 and 22,894.60

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Solution

The fourth proportional to 28,807.60, 43,170.90 and 22,894.60 is: 34,309.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,807.60 : 43,170.90 = 22,894.60 : x
  2. Step 2: Convert to fraction form
    28,807.60/43,170.90 = 22,894.60/x
  3. Step 3: Cross multiply
    28,807.60x = 43,170.90 × 22,894.60
  4. Step 4: Simplify right side
    28,807.60x = 988,380,487.14
  5. Step 5: Solve for x
    x = 988,380,487.14/28,807.60
  6. Step 6: Final answer
    x = 34,309.71

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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.