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Finding the Fourth Proportional to 26,876.80, 40,286.40 and 10,230.40

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Solution

The fourth proportional to 26,876.80, 40,286.40 and 10,230.40 is: 15,334.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,876.80 : 40,286.40 = 10,230.40 : x
  2. Step 2: Convert to fraction form
    26,876.80/40,286.40 = 10,230.40/x
  3. Step 3: Cross multiply
    26,876.80x = 40,286.40 × 10,230.40
  4. Step 4: Simplify right side
    26,876.80x = 412,145,986.56
  5. Step 5: Solve for x
    x = 412,145,986.56/26,876.80
  6. Step 6: Final answer
    x = 15,334.64

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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.