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Finding the Fourth Proportional to 18,768.92, 28,158.23 and 7,082.24

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Solution

The fourth proportional to 18,768.92, 28,158.23 and 7,082.24 is: 10,625.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,768.92 : 28,158.23 = 7,082.24 : x
  2. Step 2: Convert to fraction form
    18,768.92/28,158.23 = 7,082.24/x
  3. Step 3: Cross multiply
    18,768.92x = 28,158.23 × 7,082.24
  4. Step 4: Simplify right side
    18,768.92x = 199,423,219.75
  5. Step 5: Solve for x
    x = 199,423,219.75/18,768.92
  6. Step 6: Final answer
    x = 10,625.19

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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.