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Finding the Fourth Proportional to 26,976.60, 40,464.90 and 20,415.60

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Solution

The fourth proportional to 26,976.60, 40,464.90 and 20,415.60 is: 30,623.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,976.60 : 40,464.90 = 20,415.60 : x
  2. Step 2: Convert to fraction form
    26,976.60/40,464.90 = 20,415.60/x
  3. Step 3: Cross multiply
    26,976.60x = 40,464.90 × 20,415.60
  4. Step 4: Simplify right side
    26,976.60x = 826,115,212.44
  5. Step 5: Solve for x
    x = 826,115,212.44/26,976.60
  6. Step 6: Final answer
    x = 30,623.40

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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.