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Finding the Fourth Proportional to 18,635.76, 27,939.84 and 6,151.68

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Solution

The fourth proportional to 18,635.76, 27,939.84 and 6,151.68 is: 9,222.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,635.76 : 27,939.84 = 6,151.68 : x
  2. Step 2: Convert to fraction form
    18,635.76/27,939.84 = 6,151.68/x
  3. Step 3: Cross multiply
    18,635.76x = 27,939.84 × 6,151.68
  4. Step 4: Simplify right side
    18,635.76x = 171,876,954.93
  5. Step 5: Solve for x
    x = 171,876,954.93/18,635.76
  6. Step 6: Final answer
    x = 9,222.96

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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.