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Finding the Fourth Proportional to 18,814.10, 28,227.03 and 11,325.86

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Solution

The fourth proportional to 18,814.10, 28,227.03 and 11,325.86 is: 16,992.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,814.10 : 28,227.03 = 11,325.86 : x
  2. Step 2: Convert to fraction form
    18,814.10/28,227.03 = 11,325.86/x
  3. Step 3: Cross multiply
    18,814.10x = 28,227.03 × 11,325.86
  4. Step 4: Simplify right side
    18,814.10x = 319,695,390.00
  5. Step 5: Solve for x
    x = 319,695,390.00/18,814.10
  6. Step 6: Final answer
    x = 16,992.33

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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.