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Finding the Fourth Proportional to 17,745.80, 26,618.70 and 13,310.60

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Solution

The fourth proportional to 17,745.80, 26,618.70 and 13,310.60 is: 19,965.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,745.80 : 26,618.70 = 13,310.60 : x
  2. Step 2: Convert to fraction form
    17,745.80/26,618.70 = 13,310.60/x
  3. Step 3: Cross multiply
    17,745.80x = 26,618.70 × 13,310.60
  4. Step 4: Simplify right side
    17,745.80x = 354,310,868.22
  5. Step 5: Solve for x
    x = 354,310,868.22/17,745.80
  6. Step 6: Final answer
    x = 19,965.90

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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.