Home / 30,310.21-41,845.44-20,255.68

Finding the Fourth Proportional to 30,310.21, 41,845.44 and 20,255.68

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Solution

The fourth proportional to 30,310.21, 41,845.44 and 20,255.68 is: 27,964.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,310.21 : 41,845.44 = 20,255.68 : x
  2. Step 2: Convert to fraction form
    30,310.21/41,845.44 = 20,255.68/x
  3. Step 3: Cross multiply
    30,310.21x = 41,845.44 × 20,255.68
  4. Step 4: Simplify right side
    30,310.21x = 847,607,842.10
  5. Step 5: Solve for x
    x = 847,607,842.10/30,310.21
  6. Step 6: Final answer
    x = 27,964.43

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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.