Home / 16,930.80-25,403.40-8,161.20

Finding the Fourth Proportional to 16,930.80, 25,403.40 and 8,161.20

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Solution

The fourth proportional to 16,930.80, 25,403.40 and 8,161.20 is: 12,245.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,930.80 : 25,403.40 = 8,161.20 : x
  2. Step 2: Convert to fraction form
    16,930.80/25,403.40 = 8,161.20/x
  3. Step 3: Cross multiply
    16,930.80x = 25,403.40 × 8,161.20
  4. Step 4: Simplify right side
    16,930.80x = 207,322,228.08
  5. Step 5: Solve for x
    x = 207,322,228.08/16,930.80
  6. Step 6: Final answer
    x = 12,245.27

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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.