Home / 18,396.40-27,579.12-8,000.32

Finding the Fourth Proportional to 18,396.40, 27,579.12 and 8,000.32

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Solution

The fourth proportional to 18,396.40, 27,579.12 and 8,000.32 is: 11,993.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,396.40 : 27,579.12 = 8,000.32 : x
  2. Step 2: Convert to fraction form
    18,396.40/27,579.12 = 8,000.32/x
  3. Step 3: Cross multiply
    18,396.40x = 27,579.12 × 8,000.32
  4. Step 4: Simplify right side
    18,396.40x = 220,641,785.32
  5. Step 5: Solve for x
    x = 220,641,785.32/18,396.40
  6. Step 6: Final answer
    x = 11,993.75

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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.