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Finding the Fourth Proportional to 17,819.47, 26,729.21 and 12,255.99

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Solution

The fourth proportional to 17,819.47, 26,729.21 and 12,255.99 is: 18,383.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,819.47 : 26,729.21 = 12,255.99 : x
  2. Step 2: Convert to fraction form
    17,819.47/26,729.21 = 12,255.99/x
  3. Step 3: Cross multiply
    17,819.47x = 26,729.21 × 12,255.99
  4. Step 4: Simplify right side
    17,819.47x = 327,592,930.47
  5. Step 5: Solve for x
    x = 327,592,930.47/17,819.47
  6. Step 6: Final answer
    x = 18,383.99

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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.