Home / 12,680.36-17,493.00-8,205.56

Finding the Fourth Proportional to 12,680.36, 17,493.00 and 8,205.56

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Solution

The fourth proportional to 12,680.36, 17,493.00 and 8,205.56 is: 11,319.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,680.36 : 17,493.00 = 8,205.56 : x
  2. Step 2: Convert to fraction form
    12,680.36/17,493.00 = 8,205.56/x
  3. Step 3: Cross multiply
    12,680.36x = 17,493.00 × 8,205.56
  4. Step 4: Simplify right side
    12,680.36x = 143,539,732.59
  5. Step 5: Solve for x
    x = 143,539,732.59/12,680.36
  6. Step 6: Final answer
    x = 11,319.85

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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.