Home / 11,680.80-16,122.92-6,647.82

Finding the Fourth Proportional to 11,680.80, 16,122.92 and 6,647.82

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Solution

The fourth proportional to 11,680.80, 16,122.92 and 6,647.82 is: 9,175.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,680.80 : 16,122.92 = 6,647.82 : x
  2. Step 2: Convert to fraction form
    11,680.80/16,122.92 = 6,647.82/x
  3. Step 3: Cross multiply
    11,680.80x = 16,122.92 × 6,647.82
  4. Step 4: Simplify right side
    11,680.80x = 107,182,270.03
  5. Step 5: Solve for x
    x = 107,182,270.03/11,680.80
  6. Step 6: Final answer
    x = 9,175.94

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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.