Home / 20,125.86-30,164.30-8,425.38

Finding the Fourth Proportional to 20,125.86, 30,164.30 and 8,425.38

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Solution

The fourth proportional to 20,125.86, 30,164.30 and 8,425.38 is: 12,627.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,125.86 : 30,164.30 = 8,425.38 : x
  2. Step 2: Convert to fraction form
    20,125.86/30,164.30 = 8,425.38/x
  3. Step 3: Cross multiply
    20,125.86x = 30,164.30 × 8,425.38
  4. Step 4: Simplify right side
    20,125.86x = 254,145,689.93
  5. Step 5: Solve for x
    x = 254,145,689.93/20,125.86
  6. Step 6: Final answer
    x = 12,627.82

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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.