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Finding the Fourth Proportional to 18,550.81, 27,813.25 and 9,179.38

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Solution

The fourth proportional to 18,550.81, 27,813.25 and 9,179.38 is: 13,762.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,550.81 : 27,813.25 = 9,179.38 : x
  2. Step 2: Convert to fraction form
    18,550.81/27,813.25 = 9,179.38/x
  3. Step 3: Cross multiply
    18,550.81x = 27,813.25 × 9,179.38
  4. Step 4: Simplify right side
    18,550.81x = 255,308,390.79
  5. Step 5: Solve for x
    x = 255,308,390.79/18,550.81
  6. Step 6: Final answer
    x = 13,762.65

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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.