Home / 12,180.30-16,809.30-6,874.80

Finding the Fourth Proportional to 12,180.30, 16,809.30 and 6,874.80

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Solution

The fourth proportional to 12,180.30, 16,809.30 and 6,874.80 is: 9,487.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,180.30 : 16,809.30 = 6,874.80 : x
  2. Step 2: Convert to fraction form
    12,180.30/16,809.30 = 6,874.80/x
  3. Step 3: Cross multiply
    12,180.30x = 16,809.30 × 6,874.80
  4. Step 4: Simplify right side
    12,180.30x = 115,560,575.64
  5. Step 5: Solve for x
    x = 115,560,575.64/12,180.30
  6. Step 6: Final answer
    x = 9,487.50

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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.