Home / 12,126.92-16,732.98-6,819.80

Finding the Fourth Proportional to 12,126.92, 16,732.98 and 6,819.80

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Solution

The fourth proportional to 12,126.92, 16,732.98 and 6,819.80 is: 9,410.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.92 : 16,732.98 = 6,819.80 : x
  2. Step 2: Convert to fraction form
    12,126.92/16,732.98 = 6,819.80/x
  3. Step 3: Cross multiply
    12,126.92x = 16,732.98 × 6,819.80
  4. Step 4: Simplify right side
    12,126.92x = 114,115,493.34
  5. Step 5: Solve for x
    x = 114,115,493.34/12,126.92
  6. Step 6: Final answer
    x = 9,410.10

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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.