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Finding the Fourth Proportional to 18,305.82, 27,473.31 and 7,215.30

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Solution

The fourth proportional to 18,305.82, 27,473.31 and 7,215.30 is: 10,828.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,305.82 : 27,473.31 = 7,215.30 : x
  2. Step 2: Convert to fraction form
    18,305.82/27,473.31 = 7,215.30/x
  3. Step 3: Cross multiply
    18,305.82x = 27,473.31 × 7,215.30
  4. Step 4: Simplify right side
    18,305.82x = 198,228,173.64
  5. Step 5: Solve for x
    x = 198,228,173.64/18,305.82
  6. Step 6: Final answer
    x = 10,828.70

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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.