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Finding the Fourth Proportional to 27,227.60, 40,879.80 and 21,390.80

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Solution

The fourth proportional to 27,227.60, 40,879.80 and 21,390.80 is: 32,116.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,227.60 : 40,879.80 = 21,390.80 : x
  2. Step 2: Convert to fraction form
    27,227.60/40,879.80 = 21,390.80/x
  3. Step 3: Cross multiply
    27,227.60x = 40,879.80 × 21,390.80
  4. Step 4: Simplify right side
    27,227.60x = 874,451,625.84
  5. Step 5: Solve for x
    x = 874,451,625.84/27,227.60
  6. Step 6: Final answer
    x = 32,116.37

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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.