Home / 20,113.20-30,181.56-8,425.44

Finding the Fourth Proportional to 20,113.20, 30,181.56 and 8,425.44

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Solution

The fourth proportional to 20,113.20, 30,181.56 and 8,425.44 is: 12,643.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,113.20 : 30,181.56 = 8,425.44 : x
  2. Step 2: Convert to fraction form
    20,113.20/30,181.56 = 8,425.44/x
  3. Step 3: Cross multiply
    20,113.20x = 30,181.56 × 8,425.44
  4. Step 4: Simplify right side
    20,113.20x = 254,292,922.89
  5. Step 5: Solve for x
    x = 254,292,922.89/20,113.20
  6. Step 6: Final answer
    x = 12,643.09

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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.