Home / 18,520.38-27,720.36-13,588.83

Finding the Fourth Proportional to 18,520.38, 27,720.36 and 13,588.83

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Solution

The fourth proportional to 18,520.38, 27,720.36 and 13,588.83 is: 20,339.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.38 : 27,720.36 = 13,588.83 : x
  2. Step 2: Convert to fraction form
    18,520.38/27,720.36 = 13,588.83/x
  3. Step 3: Cross multiply
    18,520.38x = 27,720.36 × 13,588.83
  4. Step 4: Simplify right side
    18,520.38x = 376,687,259.58
  5. Step 5: Solve for x
    x = 376,687,259.58/18,520.38
  6. Step 6: Final answer
    x = 20,339.07

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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.