Home / 18,082.18-27,140.78-8,728.76

Finding the Fourth Proportional to 18,082.18, 27,140.78 and 8,728.76

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Solution

The fourth proportional to 18,082.18, 27,140.78 and 8,728.76 is: 13,101.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,082.18 : 27,140.78 = 8,728.76 : x
  2. Step 2: Convert to fraction form
    18,082.18/27,140.78 = 8,728.76/x
  3. Step 3: Cross multiply
    18,082.18x = 27,140.78 × 8,728.76
  4. Step 4: Simplify right side
    18,082.18x = 236,905,311.19
  5. Step 5: Solve for x
    x = 236,905,311.19/18,082.18
  6. Step 6: Final answer
    x = 13,101.59

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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.