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Finding the Fourth Proportional to 18,687.94, 28,032.01 and 4,836.94

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Solution

The fourth proportional to 18,687.94, 28,032.01 and 4,836.94 is: 7,255.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687.94 : 28,032.01 = 4,836.94 : x
  2. Step 2: Convert to fraction form
    18,687.94/28,032.01 = 4,836.94/x
  3. Step 3: Cross multiply
    18,687.94x = 28,032.01 × 4,836.94
  4. Step 4: Simplify right side
    18,687.94x = 135,589,068.28
  5. Step 5: Solve for x
    x = 135,589,068.28/18,687.94
  6. Step 6: Final answer
    x = 7,255.43

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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.