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Finding the Fourth Proportional to 17,653.20, 26,436.60 and 8,408.40

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Solution

The fourth proportional to 17,653.20, 26,436.60 and 8,408.40 is: 12,592.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,653.20 : 26,436.60 = 8,408.40 : x
  2. Step 2: Convert to fraction form
    17,653.20/26,436.60 = 8,408.40/x
  3. Step 3: Cross multiply
    17,653.20x = 26,436.60 × 8,408.40
  4. Step 4: Simplify right side
    17,653.20x = 222,289,507.44
  5. Step 5: Solve for x
    x = 222,289,507.44/17,653.20
  6. Step 6: Final answer
    x = 12,592.02

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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.