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Finding the Fourth Proportional to 18,692.63, 28,041.72 and 6,683.87

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Solution

The fourth proportional to 18,692.63, 28,041.72 and 6,683.87 is: 10,026.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,692.63 : 28,041.72 = 6,683.87 : x
  2. Step 2: Convert to fraction form
    18,692.63/28,041.72 = 6,683.87/x
  3. Step 3: Cross multiply
    18,692.63x = 28,041.72 × 6,683.87
  4. Step 4: Simplify right side
    18,692.63x = 187,427,037.43
  5. Step 5: Solve for x
    x = 187,427,037.43/18,692.63
  6. Step 6: Final answer
    x = 10,026.79

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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.