Home / 20,388.26-30,590.18-7,917.04

Finding the Fourth Proportional to 20,388.26, 30,590.18 and 7,917.04

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Solution

The fourth proportional to 20,388.26, 30,590.18 and 7,917.04 is: 11,878.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,388.26 : 30,590.18 = 7,917.04 : x
  2. Step 2: Convert to fraction form
    20,388.26/30,590.18 = 7,917.04/x
  3. Step 3: Cross multiply
    20,388.26x = 30,590.18 × 7,917.04
  4. Step 4: Simplify right side
    20,388.26x = 242,183,678.67
  5. Step 5: Solve for x
    x = 242,183,678.67/20,388.26
  6. Step 6: Final answer
    x = 11,878.58

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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.