Home / 28,542.78-39,388.06-15,796.50

Finding the Fourth Proportional to 28,542.78, 39,388.06 and 15,796.50

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Solution

The fourth proportional to 28,542.78, 39,388.06 and 15,796.50 is: 21,798.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,542.78 : 39,388.06 = 15,796.50 : x
  2. Step 2: Convert to fraction form
    28,542.78/39,388.06 = 15,796.50/x
  3. Step 3: Cross multiply
    28,542.78x = 39,388.06 × 15,796.50
  4. Step 4: Simplify right side
    28,542.78x = 622,193,489.79
  5. Step 5: Solve for x
    x = 622,193,489.79/28,542.78
  6. Step 6: Final answer
    x = 21,798.63

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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.