Home / 18,373.12-27,561.48-7,279.36

Finding the Fourth Proportional to 18,373.12, 27,561.48 and 7,279.36

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Solution

The fourth proportional to 18,373.12, 27,561.48 and 7,279.36 is: 10,919.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,373.12 : 27,561.48 = 7,279.36 : x
  2. Step 2: Convert to fraction form
    18,373.12/27,561.48 = 7,279.36/x
  3. Step 3: Cross multiply
    18,373.12x = 27,561.48 × 7,279.36
  4. Step 4: Simplify right side
    18,373.12x = 200,629,935.05
  5. Step 5: Solve for x
    x = 200,629,935.05/18,373.12
  6. Step 6: Final answer
    x = 10,919.75

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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.