Home / 11,986.84-17,974.20-6,990.82

Finding the Fourth Proportional to 11,986.84, 17,974.20 and 6,990.82

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Solution

The fourth proportional to 11,986.84, 17,974.20 and 6,990.82 is: 10,482.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,986.84 : 17,974.20 = 6,990.82 : x
  2. Step 2: Convert to fraction form
    11,986.84/17,974.20 = 6,990.82/x
  3. Step 3: Cross multiply
    11,986.84x = 17,974.20 × 6,990.82
  4. Step 4: Simplify right side
    11,986.84x = 125,654,396.84
  5. Step 5: Solve for x
    x = 125,654,396.84/11,986.84
  6. Step 6: Final answer
    x = 10,482.70

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1.5x scale

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.