Home / 20,555.88-30,814.38-8,083.91

Finding the Fourth Proportional to 20,555.88, 30,814.38 and 8,083.91

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Solution

The fourth proportional to 20,555.88, 30,814.38 and 8,083.91 is: 12,118.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,555.88 : 30,814.38 = 8,083.91 : x
  2. Step 2: Convert to fraction form
    20,555.88/30,814.38 = 8,083.91/x
  3. Step 3: Cross multiply
    20,555.88x = 30,814.38 × 8,083.91
  4. Step 4: Simplify right side
    20,555.88x = 249,100,520.55
  5. Step 5: Solve for x
    x = 249,100,520.55/20,555.88
  6. Step 6: Final answer
    x = 12,118.21

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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.