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Finding the Fourth Proportional to 26,906.60, 40,340.70 and 12,103.40

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Solution

The fourth proportional to 26,906.60, 40,340.70 and 12,103.40 is: 18,146.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,906.60 : 40,340.70 = 12,103.40 : x
  2. Step 2: Convert to fraction form
    26,906.60/40,340.70 = 12,103.40/x
  3. Step 3: Cross multiply
    26,906.60x = 40,340.70 × 12,103.40
  4. Step 4: Simplify right side
    26,906.60x = 488,259,628.38
  5. Step 5: Solve for x
    x = 488,259,628.38/26,906.60
  6. Step 6: Final answer
    x = 18,146.46

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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.