Home / 18,311.82-27,482.32-7,221.30

Finding the Fourth Proportional to 18,311.82, 27,482.32 and 7,221.30

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Solution

The fourth proportional to 18,311.82, 27,482.32 and 7,221.30 is: 10,837.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,311.82 : 27,482.32 = 7,221.30 : x
  2. Step 2: Convert to fraction form
    18,311.82/27,482.32 = 7,221.30/x
  3. Step 3: Cross multiply
    18,311.82x = 27,482.32 × 7,221.30
  4. Step 4: Simplify right side
    18,311.82x = 198,458,077.42
  5. Step 5: Solve for x
    x = 198,458,077.42/18,311.82
  6. Step 6: Final answer
    x = 10,837.70

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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.