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Finding the Fourth Proportional to 18,401.93, 27,609.20 and 7,867.61

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Solution

The fourth proportional to 18,401.93, 27,609.20 and 7,867.61 is: 11,804.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,401.93 : 27,609.20 = 7,867.61 : x
  2. Step 2: Convert to fraction form
    18,401.93/27,609.20 = 7,867.61/x
  3. Step 3: Cross multiply
    18,401.93x = 27,609.20 × 7,867.61
  4. Step 4: Simplify right side
    18,401.93x = 217,218,378.67
  5. Step 5: Solve for x
    x = 217,218,378.67/18,401.93
  6. Step 6: Final answer
    x = 11,804.11

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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.