Home / 20,511.02-30,766.57-11,739.87

Finding the Fourth Proportional to 20,511.02, 30,766.57 and 11,739.87

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Solution

The fourth proportional to 20,511.02, 30,766.57 and 11,739.87 is: 17,609.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.02 : 30,766.57 = 11,739.87 : x
  2. Step 2: Convert to fraction form
    20,511.02/30,766.57 = 11,739.87/x
  3. Step 3: Cross multiply
    20,511.02x = 30,766.57 × 11,739.87
  4. Step 4: Simplify right side
    20,511.02x = 361,195,502.80
  5. Step 5: Solve for x
    x = 361,195,502.80/20,511.02
  6. Step 6: Final answer
    x = 17,609.82

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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.