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Finding the Fourth Proportional to 27,311.91, 40,959.79 and 13,976.67

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Solution

The fourth proportional to 27,311.91, 40,959.79 and 13,976.67 is: 20,960.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,311.91 : 40,959.79 = 13,976.67 : x
  2. Step 2: Convert to fraction form
    27,311.91/40,959.79 = 13,976.67/x
  3. Step 3: Cross multiply
    27,311.91x = 40,959.79 × 13,976.67
  4. Step 4: Simplify right side
    27,311.91x = 572,481,586.76
  5. Step 5: Solve for x
    x = 572,481,586.76/27,311.91
  6. Step 6: Final answer
    x = 20,960.88

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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.