Home / 18,082.98-27,128.61-6,989.76

Finding the Fourth Proportional to 18,082.98, 27,128.61 and 6,989.76

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Solution

The fourth proportional to 18,082.98, 27,128.61 and 6,989.76 is: 10,486.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,082.98 : 27,128.61 = 6,989.76 : x
  2. Step 2: Convert to fraction form
    18,082.98/27,128.61 = 6,989.76/x
  3. Step 3: Cross multiply
    18,082.98x = 27,128.61 × 6,989.76
  4. Step 4: Simplify right side
    18,082.98x = 189,622,473.03
  5. Step 5: Solve for x
    x = 189,622,473.03/18,082.98
  6. Step 6: Final answer
    x = 10,486.24

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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.