Home / 12,393.20-17,102.75-6,728.00

Finding the Fourth Proportional to 12,393.20, 17,102.75 and 6,728.00

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Solution

The fourth proportional to 12,393.20, 17,102.75 and 6,728.00 is: 9,284.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,393.20 : 17,102.75 = 6,728.00 : x
  2. Step 2: Convert to fraction form
    12,393.20/17,102.75 = 6,728.00/x
  3. Step 3: Cross multiply
    12,393.20x = 17,102.75 × 6,728.00
  4. Step 4: Simplify right side
    12,393.20x = 115,067,311.12
  5. Step 5: Solve for x
    x = 115,067,311.12/12,393.20
  6. Step 6: Final answer
    x = 9,284.71

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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.