Home / 19,112.61-28,668.39-5,072.69

Finding the Fourth Proportional to 19,112.61, 28,668.39 and 5,072.69

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Solution

The fourth proportional to 19,112.61, 28,668.39 and 5,072.69 is: 7,608.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,112.61 : 28,668.39 = 5,072.69 : x
  2. Step 2: Convert to fraction form
    19,112.61/28,668.39 = 5,072.69/x
  3. Step 3: Cross multiply
    19,112.61x = 28,668.39 × 5,072.69
  4. Step 4: Simplify right side
    19,112.61x = 145,425,711.93
  5. Step 5: Solve for x
    x = 145,425,711.93/19,112.61
  6. Step 6: Final answer
    x = 7,608.89

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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.