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Finding the Fourth Proportional to 18,162.54, 27,185.49 and 12,228.48

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Solution

The fourth proportional to 18,162.54, 27,185.49 and 12,228.48 is: 18,303.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,162.54 : 27,185.49 = 12,228.48 : x
  2. Step 2: Convert to fraction form
    18,162.54/27,185.49 = 12,228.48/x
  3. Step 3: Cross multiply
    18,162.54x = 27,185.49 × 12,228.48
  4. Step 4: Simplify right side
    18,162.54x = 332,437,220.76
  5. Step 5: Solve for x
    x = 332,437,220.76/18,162.54
  6. Step 6: Final answer
    x = 18,303.45

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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.