Home / 11,971.97-16,520.68-6,665.84

Finding the Fourth Proportional to 11,971.97, 16,520.68 and 6,665.84

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Solution

The fourth proportional to 11,971.97, 16,520.68 and 6,665.84 is: 9,198.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,971.97 : 16,520.68 = 6,665.84 : x
  2. Step 2: Convert to fraction form
    11,971.97/16,520.68 = 6,665.84/x
  3. Step 3: Cross multiply
    11,971.97x = 16,520.68 × 6,665.84
  4. Step 4: Simplify right side
    11,971.97x = 110,124,209.57
  5. Step 5: Solve for x
    x = 110,124,209.57/11,971.97
  6. Step 6: Final answer
    x = 9,198.50

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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.