Home / 12,209.46-18,321.71-4,812.66

Finding the Fourth Proportional to 12,209.46, 18,321.71 and 4,812.66

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Solution

The fourth proportional to 12,209.46, 18,321.71 and 4,812.66 is: 7,221.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.46 : 18,321.71 = 4,812.66 : x
  2. Step 2: Convert to fraction form
    12,209.46/18,321.71 = 4,812.66/x
  3. Step 3: Cross multiply
    12,209.46x = 18,321.71 × 4,812.66
  4. Step 4: Simplify right side
    12,209.46x = 88,176,160.85
  5. Step 5: Solve for x
    x = 88,176,160.85/12,209.46
  6. Step 6: Final answer
    x = 7,221.95

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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.