Home / 13,997.61-20,997.18-5,676.39

Finding the Fourth Proportional to 13,997.61, 20,997.18 and 5,676.39

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Solution

The fourth proportional to 13,997.61, 20,997.18 and 5,676.39 is: 8,514.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,997.61 : 20,997.18 = 5,676.39 : x
  2. Step 2: Convert to fraction form
    13,997.61/20,997.18 = 5,676.39/x
  3. Step 3: Cross multiply
    13,997.61x = 20,997.18 × 5,676.39
  4. Step 4: Simplify right side
    13,997.61x = 119,188,182.58
  5. Step 5: Solve for x
    x = 119,188,182.58/13,997.61
  6. Step 6: Final answer
    x = 8,514.90

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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.