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Finding the Fourth Proportional to 27,121.76, 40,652.88 and 13,974.88

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Solution

The fourth proportional to 27,121.76, 40,652.88 and 13,974.88 is: 20,946.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,121.76 : 40,652.88 = 13,974.88 : x
  2. Step 2: Convert to fraction form
    27,121.76/40,652.88 = 13,974.88/x
  3. Step 3: Cross multiply
    27,121.76x = 40,652.88 × 13,974.88
  4. Step 4: Simplify right side
    27,121.76x = 568,119,119.65
  5. Step 5: Solve for x
    x = 568,119,119.65/27,121.76
  6. Step 6: Final answer
    x = 20,946.99

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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.