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Finding the Fourth Proportional to 26,581.78, 39,872.82 and 6,858.99

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Solution

The fourth proportional to 26,581.78, 39,872.82 and 6,858.99 is: 10,288.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,581.78 : 39,872.82 = 6,858.99 : x
  2. Step 2: Convert to fraction form
    26,581.78/39,872.82 = 6,858.99/x
  3. Step 3: Cross multiply
    26,581.78x = 39,872.82 × 6,858.99
  4. Step 4: Simplify right side
    26,581.78x = 273,487,299.37
  5. Step 5: Solve for x
    x = 273,487,299.37/26,581.78
  6. Step 6: Final answer
    x = 10,288.52

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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.