Home / 20,781.03-31,165.92-9,676.83

Finding the Fourth Proportional to 20,781.03, 31,165.92 and 9,676.83

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Solution

The fourth proportional to 20,781.03, 31,165.92 and 9,676.83 is: 14,512.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781.03 : 31,165.92 = 9,676.83 : x
  2. Step 2: Convert to fraction form
    20,781.03/31,165.92 = 9,676.83/x
  3. Step 3: Cross multiply
    20,781.03x = 31,165.92 × 9,676.83
  4. Step 4: Simplify right side
    20,781.03x = 301,587,309.63
  5. Step 5: Solve for x
    x = 301,587,309.63/20,781.03
  6. Step 6: Final answer
    x = 14,512.63

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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.