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Finding the Fourth Proportional to 18,477.49, 27,718.98 and 6,789.80

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Solution

The fourth proportional to 18,477.49, 27,718.98 and 6,789.80 is: 10,185.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,477.49 : 27,718.98 = 6,789.80 : x
  2. Step 2: Convert to fraction form
    18,477.49/27,718.98 = 6,789.80/x
  3. Step 3: Cross multiply
    18,477.49x = 27,718.98 × 6,789.80
  4. Step 4: Simplify right side
    18,477.49x = 188,206,330.40
  5. Step 5: Solve for x
    x = 188,206,330.40/18,477.49
  6. Step 6: Final answer
    x = 10,185.71

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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.