Home / 20,207.12-30,300.96-8,513.96

Finding the Fourth Proportional to 20,207.12, 30,300.96 and 8,513.96

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Solution

The fourth proportional to 20,207.12, 30,300.96 and 8,513.96 is: 12,766.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207.12 : 30,300.96 = 8,513.96 : x
  2. Step 2: Convert to fraction form
    20,207.12/30,300.96 = 8,513.96/x
  3. Step 3: Cross multiply
    20,207.12x = 30,300.96 × 8,513.96
  4. Step 4: Simplify right side
    20,207.12x = 257,981,161.40
  5. Step 5: Solve for x
    x = 257,981,161.40/20,207.12
  6. Step 6: Final answer
    x = 12,766.84

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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.