Home / 20,199.68-27,884.16-13,579.52

Finding the Fourth Proportional to 20,199.68, 27,884.16 and 13,579.52

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Solution

The fourth proportional to 20,199.68, 27,884.16 and 13,579.52 is: 18,745.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,199.68 : 27,884.16 = 13,579.52 : x
  2. Step 2: Convert to fraction form
    20,199.68/27,884.16 = 13,579.52/x
  3. Step 3: Cross multiply
    20,199.68x = 27,884.16 × 13,579.52
  4. Step 4: Simplify right side
    20,199.68x = 378,653,508.40
  5. Step 5: Solve for x
    x = 378,653,508.40/20,199.68
  6. Step 6: Final answer
    x = 18,745.52

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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.