Home / 27,912.92-41,812.82-12,898.70

Finding the Fourth Proportional to 27,912.92, 41,812.82 and 12,898.70

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Solution

The fourth proportional to 27,912.92, 41,812.82 and 12,898.70 is: 19,321.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,912.92 : 41,812.82 = 12,898.70 : x
  2. Step 2: Convert to fraction form
    27,912.92/41,812.82 = 12,898.70/x
  3. Step 3: Cross multiply
    27,912.92x = 41,812.82 × 12,898.70
  4. Step 4: Simplify right side
    27,912.92x = 539,330,747.78
  5. Step 5: Solve for x
    x = 539,330,747.78/27,912.92
  6. Step 6: Final answer
    x = 19,321.90

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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.