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Finding the Fourth Proportional to 13,879.50, 19,153.71 and 7,591.88

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Solution

The fourth proportional to 13,879.50, 19,153.71 and 7,591.88 is: 10,476.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,879.50 : 19,153.71 = 7,591.88 : x
  2. Step 2: Convert to fraction form
    13,879.50/19,153.71 = 7,591.88/x
  3. Step 3: Cross multiply
    13,879.50x = 19,153.71 × 7,591.88
  4. Step 4: Simplify right side
    13,879.50x = 145,412,572.11
  5. Step 5: Solve for x
    x = 145,412,572.11/13,879.50
  6. Step 6: Final answer
    x = 10,476.79

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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.