Home / 18,205.26-25,124.30-12,145.05

Finding the Fourth Proportional to 18,205.26, 25,124.30 and 12,145.05

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Solution

The fourth proportional to 18,205.26, 25,124.30 and 12,145.05 is: 16,760.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,205.26 : 25,124.30 = 12,145.05 : x
  2. Step 2: Convert to fraction form
    18,205.26/25,124.30 = 12,145.05/x
  3. Step 3: Cross multiply
    18,205.26x = 25,124.30 × 12,145.05
  4. Step 4: Simplify right side
    18,205.26x = 305,135,818.99
  5. Step 5: Solve for x
    x = 305,135,818.99/18,205.26
  6. Step 6: Final answer
    x = 16,760.86

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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.