Home / 18,958.28-28,425.25-7,872.62

Finding the Fourth Proportional to 18,958.28, 28,425.25 and 7,872.62

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Solution

The fourth proportional to 18,958.28, 28,425.25 and 7,872.62 is: 11,803.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,958.28 : 28,425.25 = 7,872.62 : x
  2. Step 2: Convert to fraction form
    18,958.28/28,425.25 = 7,872.62/x
  3. Step 3: Cross multiply
    18,958.28x = 28,425.25 × 7,872.62
  4. Step 4: Simplify right side
    18,958.28x = 223,781,191.66
  5. Step 5: Solve for x
    x = 223,781,191.66/18,958.28
  6. Step 6: Final answer
    x = 11,803.88

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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.