Home / 18,286.14-27,429.20-5,138.22

Finding the Fourth Proportional to 18,286.14, 27,429.20 and 5,138.22

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Solution

The fourth proportional to 18,286.14, 27,429.20 and 5,138.22 is: 7,707.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,286.14 : 27,429.20 = 5,138.22 : x
  2. Step 2: Convert to fraction form
    18,286.14/27,429.20 = 5,138.22/x
  3. Step 3: Cross multiply
    18,286.14x = 27,429.20 × 5,138.22
  4. Step 4: Simplify right side
    18,286.14x = 140,937,264.02
  5. Step 5: Solve for x
    x = 140,937,264.02/18,286.14
  6. Step 6: Final answer
    x = 7,707.33

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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.