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Finding the Fourth Proportional to 18,692.82, 25,832.88 and 15,330.24

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Solution

The fourth proportional to 18,692.82, 25,832.88 and 15,330.24 is: 21,185.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,692.82 : 25,832.88 = 15,330.24 : x
  2. Step 2: Convert to fraction form
    18,692.82/25,832.88 = 15,330.24/x
  3. Step 3: Cross multiply
    18,692.82x = 25,832.88 × 15,330.24
  4. Step 4: Simplify right side
    18,692.82x = 396,024,250.29
  5. Step 5: Solve for x
    x = 396,024,250.29/18,692.82
  6. Step 6: Final answer
    x = 21,185.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.