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Finding the Fourth Proportional to 26,881.80, 40,330.80 and 19,105.80

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Solution

The fourth proportional to 26,881.80, 40,330.80 and 19,105.80 is: 28,664.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,881.80 : 40,330.80 = 19,105.80 : x
  2. Step 2: Convert to fraction form
    26,881.80/40,330.80 = 19,105.80/x
  3. Step 3: Cross multiply
    26,881.80x = 40,330.80 × 19,105.80
  4. Step 4: Simplify right side
    26,881.80x = 770,552,198.64
  5. Step 5: Solve for x
    x = 770,552,198.64/26,881.80
  6. Step 6: Final answer
    x = 28,664.46

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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.