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Finding the Fourth Proportional to 27,363.60, 40,980.60 and 18,550.80

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Solution

The fourth proportional to 27,363.60, 40,980.60 and 18,550.80 is: 27,782.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,363.60 : 40,980.60 = 18,550.80 : x
  2. Step 2: Convert to fraction form
    27,363.60/40,980.60 = 18,550.80/x
  3. Step 3: Cross multiply
    27,363.60x = 40,980.60 × 18,550.80
  4. Step 4: Simplify right side
    27,363.60x = 760,222,914.48
  5. Step 5: Solve for x
    x = 760,222,914.48/27,363.60
  6. Step 6: Final answer
    x = 27,782.27

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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.