Home / 21,406.44-32,101.50-8,579.80

Finding the Fourth Proportional to 21,406.44, 32,101.50 and 8,579.80

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Solution

The fourth proportional to 21,406.44, 32,101.50 and 8,579.80 is: 12,866.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,406.44 : 32,101.50 = 8,579.80 : x
  2. Step 2: Convert to fraction form
    21,406.44/32,101.50 = 8,579.80/x
  3. Step 3: Cross multiply
    21,406.44x = 32,101.50 × 8,579.80
  4. Step 4: Simplify right side
    21,406.44x = 275,424,449.70
  5. Step 5: Solve for x
    x = 275,424,449.70/21,406.44
  6. Step 6: Final answer
    x = 12,866.43

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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.