Home / 13,781.82-19,027.84-8,684.69

Finding the Fourth Proportional to 13,781.82, 19,027.84 and 8,684.69

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Solution

The fourth proportional to 13,781.82, 19,027.84 and 8,684.69 is: 11,990.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781.82 : 19,027.84 = 8,684.69 : x
  2. Step 2: Convert to fraction form
    13,781.82/19,027.84 = 8,684.69/x
  3. Step 3: Cross multiply
    13,781.82x = 19,027.84 × 8,684.69
  4. Step 4: Simplify right side
    13,781.82x = 165,250,891.77
  5. Step 5: Solve for x
    x = 165,250,891.77/13,781.82
  6. Step 6: Final answer
    x = 11,990.50

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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.