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Finding the Fourth Proportional to 13,342.38, 18,415.04 and 8,797.08

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Solution

The fourth proportional to 13,342.38, 18,415.04 and 8,797.08 is: 12,141.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,342.38 : 18,415.04 = 8,797.08 : x
  2. Step 2: Convert to fraction form
    13,342.38/18,415.04 = 8,797.08/x
  3. Step 3: Cross multiply
    13,342.38x = 18,415.04 × 8,797.08
  4. Step 4: Simplify right side
    13,342.38x = 161,998,580.08
  5. Step 5: Solve for x
    x = 161,998,580.08/13,342.38
  6. Step 6: Final answer
    x = 12,141.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.