Home / 18,725.70-28,161.45-16,830.30

Finding the Fourth Proportional to 18,725.70, 28,161.45 and 16,830.30

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Solution

The fourth proportional to 18,725.70, 28,161.45 and 16,830.30 is: 25,310.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,725.70 : 28,161.45 = 16,830.30 : x
  2. Step 2: Convert to fraction form
    18,725.70/28,161.45 = 16,830.30/x
  3. Step 3: Cross multiply
    18,725.70x = 28,161.45 × 16,830.30
  4. Step 4: Simplify right side
    18,725.70x = 473,965,651.94
  5. Step 5: Solve for x
    x = 473,965,651.94/18,725.70
  6. Step 6: Final answer
    x = 25,310.97

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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.