Home / 18,555.12-27,836.72-5,408.64

Finding the Fourth Proportional to 18,555.12, 27,836.72 and 5,408.64

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Solution

The fourth proportional to 18,555.12, 27,836.72 and 5,408.64 is: 8,114.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,555.12 : 27,836.72 = 5,408.64 : x
  2. Step 2: Convert to fraction form
    18,555.12/27,836.72 = 5,408.64/x
  3. Step 3: Cross multiply
    18,555.12x = 27,836.72 × 5,408.64
  4. Step 4: Simplify right side
    18,555.12x = 150,558,797.26
  5. Step 5: Solve for x
    x = 150,558,797.26/18,555.12
  6. Step 6: Final answer
    x = 8,114.14

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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.