Home / 20,590.12-30,890.94-8,102.44

Finding the Fourth Proportional to 20,590.12, 30,890.94 and 8,102.44

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Solution

The fourth proportional to 20,590.12, 30,890.94 and 8,102.44 is: 12,155.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590.12 : 30,890.94 = 8,102.44 : x
  2. Step 2: Convert to fraction form
    20,590.12/30,890.94 = 8,102.44/x
  3. Step 3: Cross multiply
    20,590.12x = 30,890.94 × 8,102.44
  4. Step 4: Simplify right side
    20,590.12x = 250,291,987.89
  5. Step 5: Solve for x
    x = 250,291,987.89/20,590.12
  6. Step 6: Final answer
    x = 12,155.93

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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.