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Finding the Fourth Proportional to 25,107, 34,649.28 and 13,929

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Solution

The fourth proportional to 25,107, 34,649.28 and 13,929 is: 19,222.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,107 : 34,649.28 = 13,929 : x
  2. Step 2: Convert to fraction form
    25,107/34,649.28 = 13,929/x
  3. Step 3: Cross multiply
    25,107x = 34,649.28 × 13,929
  4. Step 4: Simplify right side
    25,107x = 482,629,821.12
  5. Step 5: Solve for x
    x = 482,629,821.12/25,107
  6. Step 6: Final answer
    x = 19,222.92

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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.