Home / 20,590.21-30,893.01-8,118.93

Finding the Fourth Proportional to 20,590.21, 30,893.01 and 8,118.93

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Solution

The fourth proportional to 20,590.21, 30,893.01 and 8,118.93 is: 12,181.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590.21 : 30,893.01 = 8,118.93 : x
  2. Step 2: Convert to fraction form
    20,590.21/30,893.01 = 8,118.93/x
  3. Step 3: Cross multiply
    20,590.21x = 30,893.01 × 8,118.93
  4. Step 4: Simplify right side
    20,590.21x = 250,818,217.33
  5. Step 5: Solve for x
    x = 250,818,217.33/20,590.21
  6. Step 6: Final answer
    x = 12,181.43

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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.