Home / 20,515,786.08-28,313,320.32-11,695,447.68

Finding the Fourth Proportional to 20,515,786.08, 28,313,320.32 and 11,695,447.68

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Solution

The fourth proportional to 20,515,786.08, 28,313,320.32 and 11,695,447.68 is: 16,140,593.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515,786.08 : 28,313,320.32 = 11,695,447.68 : x
  2. Step 2: Convert to fraction form
    20,515,786.08/28,313,320.32 = 11,695,447.68/x
  3. Step 3: Cross multiply
    20,515,786.08x = 28,313,320.32 × 11,695,447.68
  4. Step 4: Simplify right side
    20,515,786.08x = 331,136,956,449,640.88
  5. Step 5: Solve for x
    x = 331,136,956,449,640.88/20,515,786.08
  6. Step 6: Final answer
    x = 16,140,593.16

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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.