Home / 40,059.48-55,279.82-21,906.60

Finding the Fourth Proportional to 40,059.48, 55,279.82 and 21,906.60

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Solution

The fourth proportional to 40,059.48, 55,279.82 and 21,906.60 is: 30,229.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,059.48 : 55,279.82 = 21,906.60 : x
  2. Step 2: Convert to fraction form
    40,059.48/55,279.82 = 21,906.60/x
  3. Step 3: Cross multiply
    40,059.48x = 55,279.82 × 21,906.60
  4. Step 4: Simplify right side
    40,059.48x = 1,210,992,752.28
  5. Step 5: Solve for x
    x = 1,210,992,752.28/40,059.48
  6. Step 6: Final answer
    x = 30,229.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.