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Finding the Fourth Proportional to 27,179.97, 40,709.70 and 20,893.74

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Solution

The fourth proportional to 27,179.97, 40,709.70 and 20,893.74 is: 31,294.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,179.97 : 40,709.70 = 20,893.74 : x
  2. Step 2: Convert to fraction form
    27,179.97/40,709.70 = 20,893.74/x
  3. Step 3: Cross multiply
    27,179.97x = 40,709.70 × 20,893.74
  4. Step 4: Simplify right side
    27,179.97x = 850,577,887.28
  5. Step 5: Solve for x
    x = 850,577,887.28/27,179.97
  6. Step 6: Final answer
    x = 31,294.29

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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.