Home / 20,565.99-30,861.33-8,879.20

Finding the Fourth Proportional to 20,565.99, 30,861.33 and 8,879.20

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Solution

The fourth proportional to 20,565.99, 30,861.33 and 8,879.20 is: 13,324.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,565.99 : 30,861.33 = 8,879.20 : x
  2. Step 2: Convert to fraction form
    20,565.99/30,861.33 = 8,879.20/x
  3. Step 3: Cross multiply
    20,565.99x = 30,861.33 × 8,879.20
  4. Step 4: Simplify right side
    20,565.99x = 274,023,722.63
  5. Step 5: Solve for x
    x = 274,023,722.63/20,565.99
  6. Step 6: Final answer
    x = 13,324.12

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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.