Home / 28,082.20-42,123.30-8,367.62

Finding the Fourth Proportional to 28,082.20, 42,123.30 and 8,367.62

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Solution

The fourth proportional to 28,082.20, 42,123.30 and 8,367.62 is: 12,551.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,082.20 : 42,123.30 = 8,367.62 : x
  2. Step 2: Convert to fraction form
    28,082.20/42,123.30 = 8,367.62/x
  3. Step 3: Cross multiply
    28,082.20x = 42,123.30 × 8,367.62
  4. Step 4: Simplify right side
    28,082.20x = 352,471,767.55
  5. Step 5: Solve for x
    x = 352,471,767.55/28,082.20
  6. Step 6: Final answer
    x = 12,551.43

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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.