Home / 20,659.32-30,912.42-12,343.86

Finding the Fourth Proportional to 20,659.32, 30,912.42 and 12,343.86

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Solution

The fourth proportional to 20,659.32, 30,912.42 and 12,343.86 is: 18,470.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.32 : 30,912.42 = 12,343.86 : x
  2. Step 2: Convert to fraction form
    20,659.32/30,912.42 = 12,343.86/x
  3. Step 3: Cross multiply
    20,659.32x = 30,912.42 × 12,343.86
  4. Step 4: Simplify right side
    20,659.32x = 381,578,584.74
  5. Step 5: Solve for x
    x = 381,578,584.74/20,659.32
  6. Step 6: Final answer
    x = 18,470.05

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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.