Home / 20,667,149.39-28,520,668.75-11,247,975.87

Finding the Fourth Proportional to 20,667,149.39, 28,520,668.75 and 11,247,975.87

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Solution

The fourth proportional to 20,667,149.39, 28,520,668.75 and 11,247,975.87 is: 15,522,208.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,667,149.39 : 28,520,668.75 = 11,247,975.87 : x
  2. Step 2: Convert to fraction form
    20,667,149.39/28,520,668.75 = 11,247,975.87/x
  3. Step 3: Cross multiply
    20,667,149.39x = 28,520,668.75 × 11,247,975.87
  4. Step 4: Simplify right side
    20,667,149.39x = 320,799,793,991,297.38
  5. Step 5: Solve for x
    x = 320,799,793,991,297.38/20,667,149.39
  6. Step 6: Final answer
    x = 15,522,208.11

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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.