Home / 16,138.05-22,268.44-9,418.80

Finding the Fourth Proportional to 16,138.05, 22,268.44 and 9,418.80

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Solution

The fourth proportional to 16,138.05, 22,268.44 and 9,418.80 is: 12,996.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,138.05 : 22,268.44 = 9,418.80 : x
  2. Step 2: Convert to fraction form
    16,138.05/22,268.44 = 9,418.80/x
  3. Step 3: Cross multiply
    16,138.05x = 22,268.44 × 9,418.80
  4. Step 4: Simplify right side
    16,138.05x = 209,741,982.67
  5. Step 5: Solve for x
    x = 209,741,982.67/16,138.05
  6. Step 6: Final answer
    x = 12,996.74

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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.