Home / 20,884.43-31,327.91-8,404.40

Finding the Fourth Proportional to 20,884.43, 31,327.91 and 8,404.40

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Solution

The fourth proportional to 20,884.43, 31,327.91 and 8,404.40 is: 12,607.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,884.43 : 31,327.91 = 8,404.40 : x
  2. Step 2: Convert to fraction form
    20,884.43/31,327.91 = 8,404.40/x
  3. Step 3: Cross multiply
    20,884.43x = 31,327.91 × 8,404.40
  4. Step 4: Simplify right side
    20,884.43x = 263,292,244.78
  5. Step 5: Solve for x
    x = 263,292,244.78/20,884.43
  6. Step 6: Final answer
    x = 12,607.11

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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.