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Finding the Fourth Proportional to 18,119.25, 27,178.92 and 11,005.29

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Solution

The fourth proportional to 18,119.25, 27,178.92 and 11,005.29 is: 16,507.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,119.25 : 27,178.92 = 11,005.29 : x
  2. Step 2: Convert to fraction form
    18,119.25/27,178.92 = 11,005.29/x
  3. Step 3: Cross multiply
    18,119.25x = 27,178.92 × 11,005.29
  4. Step 4: Simplify right side
    18,119.25x = 299,111,896.49
  5. Step 5: Solve for x
    x = 299,111,896.49/18,119.25
  6. Step 6: Final answer
    x = 16,507.96

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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.