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Finding the Fourth Proportional to 28,679.32, 43,018.97 and 12,034.88

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Solution

The fourth proportional to 28,679.32, 43,018.97 and 12,034.88 is: 18,052.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,679.32 : 43,018.97 = 12,034.88 : x
  2. Step 2: Convert to fraction form
    28,679.32/43,018.97 = 12,034.88/x
  3. Step 3: Cross multiply
    28,679.32x = 43,018.97 × 12,034.88
  4. Step 4: Simplify right side
    28,679.32x = 517,728,129.27
  5. Step 5: Solve for x
    x = 517,728,129.27/28,679.32
  6. Step 6: Final answer
    x = 18,052.32

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.