Home / 21,784.44-32,624.82-12,531

Finding the Fourth Proportional to 21,784.44, 32,624.82 and 12,531

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Solution

The fourth proportional to 21,784.44, 32,624.82 and 12,531 is: 18,766.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,784.44 : 32,624.82 = 12,531 : x
  2. Step 2: Convert to fraction form
    21,784.44/32,624.82 = 12,531/x
  3. Step 3: Cross multiply
    21,784.44x = 32,624.82 × 12,531
  4. Step 4: Simplify right side
    21,784.44x = 408,821,619.42
  5. Step 5: Solve for x
    x = 408,821,619.42/21,784.44
  6. Step 6: Final answer
    x = 18,766.68

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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.