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Finding the Fourth Proportional to 19,692.48, 27,179 and 18,806.72

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Solution

The fourth proportional to 19,692.48, 27,179 and 18,806.72 is: 25,956.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,692.48 : 27,179 = 18,806.72 : x
  2. Step 2: Convert to fraction form
    19,692.48/27,179 = 18,806.72/x
  3. Step 3: Cross multiply
    19,692.48x = 27,179 × 18,806.72
  4. Step 4: Simplify right side
    19,692.48x = 511,147,842.88
  5. Step 5: Solve for x
    x = 511,147,842.88/19,692.48
  6. Step 6: Final answer
    x = 25,956.50

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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.