Home / 28,945.68-43,425-15,791.28

Finding the Fourth Proportional to 28,945.68, 43,425 and 15,791.28

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Solution

The fourth proportional to 28,945.68, 43,425 and 15,791.28 is: 23,690.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,945.68 : 43,425 = 15,791.28 : x
  2. Step 2: Convert to fraction form
    28,945.68/43,425 = 15,791.28/x
  3. Step 3: Cross multiply
    28,945.68x = 43,425 × 15,791.28
  4. Step 4: Simplify right side
    28,945.68x = 685,736,334
  5. Step 5: Solve for x
    x = 685,736,334/28,945.68
  6. Step 6: Final answer
    x = 23,690.46

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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.