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Finding the Fourth Proportional to 18,561.78, 25,617 and 10,604.04

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Solution

The fourth proportional to 18,561.78, 25,617 and 10,604.04 is: 14,634.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,561.78 : 25,617 = 10,604.04 : x
  2. Step 2: Convert to fraction form
    18,561.78/25,617 = 10,604.04/x
  3. Step 3: Cross multiply
    18,561.78x = 25,617 × 10,604.04
  4. Step 4: Simplify right side
    18,561.78x = 271,643,692.68
  5. Step 5: Solve for x
    x = 271,643,692.68/18,561.78
  6. Step 6: Final answer
    x = 14,634.57

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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.