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Finding the Fourth Proportional to 25,342.97, 34,978.91 and 16,859.84

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Solution

The fourth proportional to 25,342.97, 34,978.91 and 16,859.84 is: 23,270.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,342.97 : 34,978.91 = 16,859.84 : x
  2. Step 2: Convert to fraction form
    25,342.97/34,978.91 = 16,859.84/x
  3. Step 3: Cross multiply
    25,342.97x = 34,978.91 × 16,859.84
  4. Step 4: Simplify right side
    25,342.97x = 589,738,566.78
  5. Step 5: Solve for x
    x = 589,738,566.78/25,342.97
  6. Step 6: Final answer
    x = 23,270.31

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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.