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Finding the Fourth Proportional to 26,671.78, 40,007.64 and 8,203.78

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Solution

The fourth proportional to 26,671.78, 40,007.64 and 8,203.78 is: 12,305.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,671.78 : 40,007.64 = 8,203.78 : x
  2. Step 2: Convert to fraction form
    26,671.78/40,007.64 = 8,203.78/x
  3. Step 3: Cross multiply
    26,671.78x = 40,007.64 × 8,203.78
  4. Step 4: Simplify right side
    26,671.78x = 328,213,876.88
  5. Step 5: Solve for x
    x = 328,213,876.88/26,671.78
  6. Step 6: Final answer
    x = 12,305.66

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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.