Home / 12,629.91-17,429.40-6,964.86

Finding the Fourth Proportional to 12,629.91, 17,429.40 and 6,964.86

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Solution

The fourth proportional to 12,629.91, 17,429.40 and 6,964.86 is: 9,611.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,629.91 : 17,429.40 = 6,964.86 : x
  2. Step 2: Convert to fraction form
    12,629.91/17,429.40 = 6,964.86/x
  3. Step 3: Cross multiply
    12,629.91x = 17,429.40 × 6,964.86
  4. Step 4: Simplify right side
    12,629.91x = 121,393,330.88
  5. Step 5: Solve for x
    x = 121,393,330.88/12,629.91
  6. Step 6: Final answer
    x = 9,611.58

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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.