Home / 18,960.28-28,428.24-7,874.62

Finding the Fourth Proportional to 18,960.28, 28,428.24 and 7,874.62

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Solution

The fourth proportional to 18,960.28, 28,428.24 and 7,874.62 is: 11,806.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,960.28 : 28,428.24 = 7,874.62 : x
  2. Step 2: Convert to fraction form
    18,960.28/28,428.24 = 7,874.62/x
  3. Step 3: Cross multiply
    18,960.28x = 28,428.24 × 7,874.62
  4. Step 4: Simplify right side
    18,960.28x = 223,861,587.27
  5. Step 5: Solve for x
    x = 223,861,587.27/18,960.28
  6. Step 6: Final answer
    x = 11,806.87

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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.