Home / 18,517.18-27,768.30-6,827.80

Finding the Fourth Proportional to 18,517.18, 27,768.30 and 6,827.80

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Solution

The fourth proportional to 18,517.18, 27,768.30 and 6,827.80 is: 10,238.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,517.18 : 27,768.30 = 6,827.80 : x
  2. Step 2: Convert to fraction form
    18,517.18/27,768.30 = 6,827.80/x
  3. Step 3: Cross multiply
    18,517.18x = 27,768.30 × 6,827.80
  4. Step 4: Simplify right side
    18,517.18x = 189,596,398.74
  5. Step 5: Solve for x
    x = 189,596,398.74/18,517.18
  6. Step 6: Final answer
    x = 10,238.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.