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Finding the Fourth Proportional to 18,179.87, 27,229.70 and 13,238.17

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Solution

The fourth proportional to 18,179.87, 27,229.70 and 13,238.17 is: 19,828.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,179.87 : 27,229.70 = 13,238.17 : x
  2. Step 2: Convert to fraction form
    18,179.87/27,229.70 = 13,238.17/x
  3. Step 3: Cross multiply
    18,179.87x = 27,229.70 × 13,238.17
  4. Step 4: Simplify right side
    18,179.87x = 360,471,362.67
  5. Step 5: Solve for x
    x = 360,471,362.67/18,179.87
  6. Step 6: Final answer
    x = 19,828.05

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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.