Home / 20,489,979.33-28,276,741.85-11,323,212.57

Finding the Fourth Proportional to 20,489,979.33, 28,276,741.85 and 11,323,212.57

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Solution

The fourth proportional to 20,489,979.33, 28,276,741.85 and 11,323,212.57 is: 15,626,348.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,489,979.33 : 28,276,741.85 = 11,323,212.57 : x
  2. Step 2: Convert to fraction form
    20,489,979.33/28,276,741.85 = 11,323,212.57/x
  3. Step 3: Cross multiply
    20,489,979.33x = 28,276,741.85 × 11,323,212.57
  4. Step 4: Simplify right side
    20,489,979.33x = 320,183,558,697,949
  5. Step 5: Solve for x
    x = 320,183,558,697,949/20,489,979.33
  6. Step 6: Final answer
    x = 15,626,348.55

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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.