Home / 13,956.46-20,912.80-11,867.88

Finding the Fourth Proportional to 13,956.46, 20,912.80 and 11,867.88

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Solution

The fourth proportional to 13,956.46, 20,912.80 and 11,867.88 is: 17,783.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,956.46 : 20,912.80 = 11,867.88 : x
  2. Step 2: Convert to fraction form
    13,956.46/20,912.80 = 11,867.88/x
  3. Step 3: Cross multiply
    13,956.46x = 20,912.80 × 11,867.88
  4. Step 4: Simplify right side
    13,956.46x = 248,190,600.86
  5. Step 5: Solve for x
    x = 248,190,600.86/13,956.46
  6. Step 6: Final answer
    x = 17,783.21

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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.