Home / 18,268.32-27,403.68-5,121.20

Finding the Fourth Proportional to 18,268.32, 27,403.68 and 5,121.20

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Solution

The fourth proportional to 18,268.32, 27,403.68 and 5,121.20 is: 7,682.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,268.32 : 27,403.68 = 5,121.20 : x
  2. Step 2: Convert to fraction form
    18,268.32/27,403.68 = 5,121.20/x
  3. Step 3: Cross multiply
    18,268.32x = 27,403.68 × 5,121.20
  4. Step 4: Simplify right side
    18,268.32x = 140,339,726.02
  5. Step 5: Solve for x
    x = 140,339,726.02/18,268.32
  6. Step 6: Final answer
    x = 7,682.14

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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.