Home / 20,956,514.20-28,904,400.60-18,504,799.72

Finding the Fourth Proportional to 20,956,514.20, 28,904,400.60 and 18,504,799.72

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Solution

The fourth proportional to 20,956,514.20, 28,904,400.60 and 18,504,799.72 is: 25,522,858.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956,514.20 : 28,904,400.60 = 18,504,799.72 : x
  2. Step 2: Convert to fraction form
    20,956,514.20/28,904,400.60 = 18,504,799.72/x
  3. Step 3: Cross multiply
    20,956,514.20x = 28,904,400.60 × 18,504,799.72
  4. Step 4: Simplify right side
    20,956,514.20x = 534,870,144,129,647.81
  5. Step 5: Solve for x
    x = 534,870,144,129,647.81/20,956,514.20
  6. Step 6: Final answer
    x = 25,522,858.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.