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Finding the Fourth Proportional to 18,757.08, 28,137.96 and 6,286.08

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Solution

The fourth proportional to 18,757.08, 28,137.96 and 6,286.08 is: 9,429.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,757.08 : 28,137.96 = 6,286.08 : x
  2. Step 2: Convert to fraction form
    18,757.08/28,137.96 = 6,286.08/x
  3. Step 3: Cross multiply
    18,757.08x = 28,137.96 × 6,286.08
  4. Step 4: Simplify right side
    18,757.08x = 176,877,467.60
  5. Step 5: Solve for x
    x = 176,877,467.60/18,757.08
  6. Step 6: Final answer
    x = 9,429.90

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1.5x scale

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.