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Finding the Fourth Proportional to 18,117.54, 27,185.49 and 8,765.55

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Solution

The fourth proportional to 18,117.54, 27,185.49 and 8,765.55 is: 13,152.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.54 : 27,185.49 = 8,765.55 : x
  2. Step 2: Convert to fraction form
    18,117.54/27,185.49 = 8,765.55/x
  3. Step 3: Cross multiply
    18,117.54x = 27,185.49 × 8,765.55
  4. Step 4: Simplify right side
    18,117.54x = 238,295,771.87
  5. Step 5: Solve for x
    x = 238,295,771.87/18,117.54
  6. Step 6: Final answer
    x = 13,152.77

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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.