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Finding the Fourth Proportional to 18,359.64, 27,502.20 and 8,485.20

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Solution

The fourth proportional to 18,359.64, 27,502.20 and 8,485.20 is: 12,710.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,359.64 : 27,502.20 = 8,485.20 : x
  2. Step 2: Convert to fraction form
    18,359.64/27,502.20 = 8,485.20/x
  3. Step 3: Cross multiply
    18,359.64x = 27,502.20 × 8,485.20
  4. Step 4: Simplify right side
    18,359.64x = 233,361,667.44
  5. Step 5: Solve for x
    x = 233,361,667.44/18,359.64
  6. Step 6: Final answer
    x = 12,710.58

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.