Home / 39,918.69-55,090.29-22,013.69

Finding the Fourth Proportional to 39,918.69, 55,090.29 and 22,013.69

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Solution

The fourth proportional to 39,918.69, 55,090.29 and 22,013.69 is: 30,380.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,918.69 : 55,090.29 = 22,013.69 : x
  2. Step 2: Convert to fraction form
    39,918.69/55,090.29 = 22,013.69/x
  3. Step 3: Cross multiply
    39,918.69x = 55,090.29 × 22,013.69
  4. Step 4: Simplify right side
    39,918.69x = 1,212,740,290.62
  5. Step 5: Solve for x
    x = 1,212,740,290.62/39,918.69
  6. Step 6: Final answer
    x = 30,380.26

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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.