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Finding the Fourth Proportional to 27,704.92, 38,232.92 and 15,129.68

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Solution

The fourth proportional to 27,704.92, 38,232.92 and 15,129.68 is: 20,879.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,704.92 : 38,232.92 = 15,129.68 : x
  2. Step 2: Convert to fraction form
    27,704.92/38,232.92 = 15,129.68/x
  3. Step 3: Cross multiply
    27,704.92x = 38,232.92 × 15,129.68
  4. Step 4: Simplify right side
    27,704.92x = 578,451,845.07
  5. Step 5: Solve for x
    x = 578,451,845.07/27,704.92
  6. Step 6: Final answer
    x = 20,879.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.