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Finding the Fourth Proportional to 26,919.20, 40,380.60 and 9,149.60

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Solution

The fourth proportional to 26,919.20, 40,380.60 and 9,149.60 is: 13,725.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,919.20 : 40,380.60 = 9,149.60 : x
  2. Step 2: Convert to fraction form
    26,919.20/40,380.60 = 9,149.60/x
  3. Step 3: Cross multiply
    26,919.20x = 40,380.60 × 9,149.60
  4. Step 4: Simplify right side
    26,919.20x = 369,466,337.76
  5. Step 5: Solve for x
    x = 369,466,337.76/26,919.20
  6. Step 6: Final answer
    x = 13,725.01

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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.