Home / 14,078.75-21,104.15-7,841.61

Finding the Fourth Proportional to 14,078.75, 21,104.15 and 7,841.61

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Solution

The fourth proportional to 14,078.75, 21,104.15 and 7,841.61 is: 11,754.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,078.75 : 21,104.15 = 7,841.61 : x
  2. Step 2: Convert to fraction form
    14,078.75/21,104.15 = 7,841.61/x
  3. Step 3: Cross multiply
    14,078.75x = 21,104.15 × 7,841.61
  4. Step 4: Simplify right side
    14,078.75x = 165,490,474.47
  5. Step 5: Solve for x
    x = 165,490,474.47/14,078.75
  6. Step 6: Final answer
    x = 11,754.63

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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.