Home / 20,200.90-27,872.49-12,241.30

Finding the Fourth Proportional to 20,200.90, 27,872.49 and 12,241.30

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Solution

The fourth proportional to 20,200.90, 27,872.49 and 12,241.30 is: 16,890.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.90 : 27,872.49 = 12,241.30 : x
  2. Step 2: Convert to fraction form
    20,200.90/27,872.49 = 12,241.30/x
  3. Step 3: Cross multiply
    20,200.90x = 27,872.49 × 12,241.30
  4. Step 4: Simplify right side
    20,200.90x = 341,195,511.84
  5. Step 5: Solve for x
    x = 341,195,511.84/20,200.90
  6. Step 6: Final answer
    x = 16,890.11

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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.