Home / 20,614.56-30,921.84-11,438.88

Finding the Fourth Proportional to 20,614.56, 30,921.84 and 11,438.88

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Solution

The fourth proportional to 20,614.56, 30,921.84 and 11,438.88 is: 17,158.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,614.56 : 30,921.84 = 11,438.88 : x
  2. Step 2: Convert to fraction form
    20,614.56/30,921.84 = 11,438.88/x
  3. Step 3: Cross multiply
    20,614.56x = 30,921.84 × 11,438.88
  4. Step 4: Simplify right side
    20,614.56x = 353,711,217.14
  5. Step 5: Solve for x
    x = 353,711,217.14/20,614.56
  6. Step 6: Final answer
    x = 17,158.32

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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.