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Finding the Fourth Proportional to 17,403.20, 26,104.80 and 4,255.70

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Solution

The fourth proportional to 17,403.20, 26,104.80 and 4,255.70 is: 6,383.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,403.20 : 26,104.80 = 4,255.70 : x
  2. Step 2: Convert to fraction form
    17,403.20/26,104.80 = 4,255.70/x
  3. Step 3: Cross multiply
    17,403.20x = 26,104.80 × 4,255.70
  4. Step 4: Simplify right side
    17,403.20x = 111,094,197.36
  5. Step 5: Solve for x
    x = 111,094,197.36/17,403.20
  6. Step 6: Final answer
    x = 6,383.55

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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.