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Finding the Fourth Proportional to 26,860, 40,292.16 and 8,392

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Solution

The fourth proportional to 26,860, 40,292.16 and 8,392 is: 12,588.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,860 : 40,292.16 = 8,392 : x
  2. Step 2: Convert to fraction form
    26,860/40,292.16 = 8,392/x
  3. Step 3: Cross multiply
    26,860x = 40,292.16 × 8,392
  4. Step 4: Simplify right side
    26,860x = 338,131,806.72
  5. Step 5: Solve for x
    x = 338,131,806.72/26,860
  6. Step 6: Final answer
    x = 12,588.67

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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.