Home / 21,918.20-32,874.86-8,591

Finding the Fourth Proportional to 21,918.20, 32,874.86 and 8,591

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Solution

The fourth proportional to 21,918.20, 32,874.86 and 8,591 is: 12,885.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,918.20 : 32,874.86 = 8,591 : x
  2. Step 2: Convert to fraction form
    21,918.20/32,874.86 = 8,591/x
  3. Step 3: Cross multiply
    21,918.20x = 32,874.86 × 8,591
  4. Step 4: Simplify right side
    21,918.20x = 282,427,922.26
  5. Step 5: Solve for x
    x = 282,427,922.26/21,918.20
  6. Step 6: Final answer
    x = 12,885.54

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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.