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Finding the Fourth Proportional to 18,229.36, 27,357 and 8,379.76

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Solution

The fourth proportional to 18,229.36, 27,357 and 8,379.76 is: 12,575.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,229.36 : 27,357 = 8,379.76 : x
  2. Step 2: Convert to fraction form
    18,229.36/27,357 = 8,379.76/x
  3. Step 3: Cross multiply
    18,229.36x = 27,357 × 8,379.76
  4. Step 4: Simplify right side
    18,229.36x = 229,245,094.32
  5. Step 5: Solve for x
    x = 229,245,094.32/18,229.36
  6. Step 6: Final answer
    x = 12,575.60

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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.