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Finding the Fourth Proportional to 18,379.98, 27,486.90 and 14,162.72

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Solution

The fourth proportional to 18,379.98, 27,486.90 and 14,162.72 is: 21,180.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379.98 : 27,486.90 = 14,162.72 : x
  2. Step 2: Convert to fraction form
    18,379.98/27,486.90 = 14,162.72/x
  3. Step 3: Cross multiply
    18,379.98x = 27,486.90 × 14,162.72
  4. Step 4: Simplify right side
    18,379.98x = 389,289,268.37
  5. Step 5: Solve for x
    x = 389,289,268.37/18,379.98
  6. Step 6: Final answer
    x = 21,180.07

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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.