Home / 18,119.38-27,175.64-5,639.56

Finding the Fourth Proportional to 18,119.38, 27,175.64 and 5,639.56

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Solution

The fourth proportional to 18,119.38, 27,175.64 and 5,639.56 is: 8,458.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,119.38 : 27,175.64 = 5,639.56 : x
  2. Step 2: Convert to fraction form
    18,119.38/27,175.64 = 5,639.56/x
  3. Step 3: Cross multiply
    18,119.38x = 27,175.64 × 5,639.56
  4. Step 4: Simplify right side
    18,119.38x = 153,258,624.12
  5. Step 5: Solve for x
    x = 153,258,624.12/18,119.38
  6. Step 6: Final answer
    x = 8,458.27

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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.