Home / 21,905.92-30,229.62-12,473.86

Finding the Fourth Proportional to 21,905.92, 30,229.62 and 12,473.86

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Solution

The fourth proportional to 21,905.92, 30,229.62 and 12,473.86 is: 17,213.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,905.92 : 30,229.62 = 12,473.86 : x
  2. Step 2: Convert to fraction form
    21,905.92/30,229.62 = 12,473.86/x
  3. Step 3: Cross multiply
    21,905.92x = 30,229.62 × 12,473.86
  4. Step 4: Simplify right side
    21,905.92x = 377,080,047.73
  5. Step 5: Solve for x
    x = 377,080,047.73/21,905.92
  6. Step 6: Final answer
    x = 17,213.61

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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.