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Finding the Fourth Proportional to 18,379.75, 25,366.47 and 17,879.37

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Solution

The fourth proportional to 18,379.75, 25,366.47 and 17,879.37 is: 24,675.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379.75 : 25,366.47 = 17,879.37 : x
  2. Step 2: Convert to fraction form
    18,379.75/25,366.47 = 17,879.37/x
  3. Step 3: Cross multiply
    18,379.75x = 25,366.47 × 17,879.37
  4. Step 4: Simplify right side
    18,379.75x = 453,536,502.72
  5. Step 5: Solve for x
    x = 453,536,502.72/18,379.75
  6. Step 6: Final answer
    x = 24,675.88

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1.5x scale

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.