Home / 21,860.24-32,786.82-7,817.88

Finding the Fourth Proportional to 21,860.24, 32,786.82 and 7,817.88

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Solution

The fourth proportional to 21,860.24, 32,786.82 and 7,817.88 is: 11,725.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,860.24 : 32,786.82 = 7,817.88 : x
  2. Step 2: Convert to fraction form
    21,860.24/32,786.82 = 7,817.88/x
  3. Step 3: Cross multiply
    21,860.24x = 32,786.82 × 7,817.88
  4. Step 4: Simplify right side
    21,860.24x = 256,323,424.34
  5. Step 5: Solve for x
    x = 256,323,424.34/21,860.24
  6. Step 6: Final answer
    x = 11,725.56

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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.