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Finding the Fourth Proportional to 26,899.25, 40,355.36 and 8,431.25

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Solution

The fourth proportional to 26,899.25, 40,355.36 and 8,431.25 is: 12,648.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,899.25 : 40,355.36 = 8,431.25 : x
  2. Step 2: Convert to fraction form
    26,899.25/40,355.36 = 8,431.25/x
  3. Step 3: Cross multiply
    26,899.25x = 40,355.36 × 8,431.25
  4. Step 4: Simplify right side
    26,899.25x = 340,246,086.84
  5. Step 5: Solve for x
    x = 340,246,086.84/26,899.25
  6. Step 6: Final answer
    x = 12,648.91

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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.