Home / 12,078.67-18,125.30-4,286.88

Finding the Fourth Proportional to 12,078.67, 18,125.30 and 4,286.88

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Solution

The fourth proportional to 12,078.67, 18,125.30 and 4,286.88 is: 6,432.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.67 : 18,125.30 = 4,286.88 : x
  2. Step 2: Convert to fraction form
    12,078.67/18,125.30 = 4,286.88/x
  3. Step 3: Cross multiply
    12,078.67x = 18,125.30 × 4,286.88
  4. Step 4: Simplify right side
    12,078.67x = 77,700,986.06
  5. Step 5: Solve for x
    x = 77,700,986.06/12,078.67
  6. Step 6: Final answer
    x = 6,432.91

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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.