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Finding the Fourth Proportional to 17,300.70, 25,951.04 and 12,379.95

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Solution

The fourth proportional to 17,300.70, 25,951.04 and 12,379.95 is: 18,569.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,300.70 : 25,951.04 = 12,379.95 : x
  2. Step 2: Convert to fraction form
    17,300.70/25,951.04 = 12,379.95/x
  3. Step 3: Cross multiply
    17,300.70x = 25,951.04 × 12,379.95
  4. Step 4: Simplify right side
    17,300.70x = 321,272,577.65
  5. Step 5: Solve for x
    x = 321,272,577.65/17,300.70
  6. Step 6: Final answer
    x = 18,569.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.