Home / 18,286.08-27,429.40-5,138.70

Finding the Fourth Proportional to 18,286.08, 27,429.40 and 5,138.70

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Solution

The fourth proportional to 18,286.08, 27,429.40 and 5,138.70 is: 7,708.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,286.08 : 27,429.40 = 5,138.70 : x
  2. Step 2: Convert to fraction form
    18,286.08/27,429.40 = 5,138.70/x
  3. Step 3: Cross multiply
    18,286.08x = 27,429.40 × 5,138.70
  4. Step 4: Simplify right side
    18,286.08x = 140,951,457.78
  5. Step 5: Solve for x
    x = 140,951,457.78/18,286.08
  6. Step 6: Final answer
    x = 7,708.13

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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.