Home / 18,579.68-25,651.52-12,912.64

Finding the Fourth Proportional to 18,579.68, 25,651.52 and 12,912.64

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Solution

The fourth proportional to 18,579.68, 25,651.52 and 12,912.64 is: 17,827.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,579.68 : 25,651.52 = 12,912.64 : x
  2. Step 2: Convert to fraction form
    18,579.68/25,651.52 = 12,912.64/x
  3. Step 3: Cross multiply
    18,579.68x = 25,651.52 × 12,912.64
  4. Step 4: Simplify right side
    18,579.68x = 331,228,843.21
  5. Step 5: Solve for x
    x = 331,228,843.21/18,579.68
  6. Step 6: Final answer
    x = 17,827.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.