Home / 26,880.21-40,321.22-20,649.69

Finding the Fourth Proportional to 26,880.21, 40,321.22 and 20,649.69

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Solution

The fourth proportional to 26,880.21, 40,321.22 and 20,649.69 is: 30,975.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,880.21 : 40,321.22 = 20,649.69 : x
  2. Step 2: Convert to fraction form
    26,880.21/40,321.22 = 20,649.69/x
  3. Step 3: Cross multiply
    26,880.21x = 40,321.22 × 20,649.69
  4. Step 4: Simplify right side
    26,880.21x = 832,620,590.17
  5. Step 5: Solve for x
    x = 832,620,590.17/26,880.21
  6. Step 6: Final answer
    x = 30,975.23

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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.