Home / 12,179.91-18,262.86-4,775.70

Finding the Fourth Proportional to 12,179.91, 18,262.86 and 4,775.70

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Solution

The fourth proportional to 12,179.91, 18,262.86 and 4,775.70 is: 7,160.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,179.91 : 18,262.86 = 4,775.70 : x
  2. Step 2: Convert to fraction form
    12,179.91/18,262.86 = 4,775.70/x
  3. Step 3: Cross multiply
    12,179.91x = 18,262.86 × 4,775.70
  4. Step 4: Simplify right side
    12,179.91x = 87,217,940.50
  5. Step 5: Solve for x
    x = 87,217,940.50/12,179.91
  6. Step 6: Final answer
    x = 7,160.80

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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.