Home / 12,847.28-19,270.68-4,082.72

Finding the Fourth Proportional to 12,847.28, 19,270.68 and 4,082.72

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Solution

The fourth proportional to 12,847.28, 19,270.68 and 4,082.72 is: 6,124.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,847.28 : 19,270.68 = 4,082.72 : x
  2. Step 2: Convert to fraction form
    12,847.28/19,270.68 = 4,082.72/x
  3. Step 3: Cross multiply
    12,847.28x = 19,270.68 × 4,082.72
  4. Step 4: Simplify right side
    12,847.28x = 78,676,790.65
  5. Step 5: Solve for x
    x = 78,676,790.65/12,847.28
  6. Step 6: Final answer
    x = 6,124.00

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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.