Home / 12,653.87-17,469.80-8,680.82

Finding the Fourth Proportional to 12,653.87, 17,469.80 and 8,680.82

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Solution

The fourth proportional to 12,653.87, 17,469.80 and 8,680.82 is: 11,984.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,653.87 : 17,469.80 = 8,680.82 : x
  2. Step 2: Convert to fraction form
    12,653.87/17,469.80 = 8,680.82/x
  3. Step 3: Cross multiply
    12,653.87x = 17,469.80 × 8,680.82
  4. Step 4: Simplify right side
    12,653.87x = 151,652,213.72
  5. Step 5: Solve for x
    x = 151,652,213.72/12,653.87
  6. Step 6: Final answer
    x = 11,984.65

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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.