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Finding the Fourth Proportional to 18,692.62, 28,030.72 and 6,997.63

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Solution

The fourth proportional to 18,692.62, 28,030.72 and 6,997.63 is: 10,493.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,692.62 : 28,030.72 = 6,997.63 : x
  2. Step 2: Convert to fraction form
    18,692.62/28,030.72 = 6,997.63/x
  3. Step 3: Cross multiply
    18,692.62x = 28,030.72 × 6,997.63
  4. Step 4: Simplify right side
    18,692.62x = 196,148,572.21
  5. Step 5: Solve for x
    x = 196,148,572.21/18,692.62
  6. Step 6: Final answer
    x = 10,493.37

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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.