Home / 13,781.79-20,676.62-6,763.92

Finding the Fourth Proportional to 13,781.79, 20,676.62 and 6,763.92

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Solution

The fourth proportional to 13,781.79, 20,676.62 and 6,763.92 is: 10,147.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781.79 : 20,676.62 = 6,763.92 : x
  2. Step 2: Convert to fraction form
    13,781.79/20,676.62 = 6,763.92/x
  3. Step 3: Cross multiply
    13,781.79x = 20,676.62 × 6,763.92
  4. Step 4: Simplify right side
    13,781.79x = 139,854,866.35
  5. Step 5: Solve for x
    x = 139,854,866.35/13,781.79
  6. Step 6: Final answer
    x = 10,147.80

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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.