Home / 18,082.53-27,120.69-4,931.78

Finding the Fourth Proportional to 18,082.53, 27,120.69 and 4,931.78

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Solution

The fourth proportional to 18,082.53, 27,120.69 and 4,931.78 is: 7,396.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,082.53 : 27,120.69 = 4,931.78 : x
  2. Step 2: Convert to fraction form
    18,082.53/27,120.69 = 4,931.78/x
  3. Step 3: Cross multiply
    18,082.53x = 27,120.69 × 4,931.78
  4. Step 4: Simplify right side
    18,082.53x = 133,753,140.92
  5. Step 5: Solve for x
    x = 133,753,140.92/18,082.53
  6. Step 6: Final answer
    x = 7,396.82

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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.