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Finding the Fourth Proportional to 25,806.78, 35,616.96 and 18,659.88

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Solution

The fourth proportional to 25,806.78, 35,616.96 and 18,659.88 is: 25,753.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,806.78 : 35,616.96 = 18,659.88 : x
  2. Step 2: Convert to fraction form
    25,806.78/35,616.96 = 18,659.88/x
  3. Step 3: Cross multiply
    25,806.78x = 35,616.96 × 18,659.88
  4. Step 4: Simplify right side
    25,806.78x = 664,608,199.56
  5. Step 5: Solve for x
    x = 664,608,199.56/25,806.78
  6. Step 6: Final answer
    x = 25,753.24

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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.