Home / 20,514.20-30,785.70-8,835.80

Finding the Fourth Proportional to 20,514.20, 30,785.70 and 8,835.80

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Solution

The fourth proportional to 20,514.20, 30,785.70 and 8,835.80 is: 13,259.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,514.20 : 30,785.70 = 8,835.80 : x
  2. Step 2: Convert to fraction form
    20,514.20/30,785.70 = 8,835.80/x
  3. Step 3: Cross multiply
    20,514.20x = 30,785.70 × 8,835.80
  4. Step 4: Simplify right side
    20,514.20x = 272,016,288.06
  5. Step 5: Solve for x
    x = 272,016,288.06/20,514.20
  6. Step 6: Final answer
    x = 13,259.90

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.