Home / 20,676.72-31,008.60-10,810.80

Finding the Fourth Proportional to 20,676.72, 31,008.60 and 10,810.80

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Solution

The fourth proportional to 20,676.72, 31,008.60 and 10,810.80 is: 16,212.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.72 : 31,008.60 = 10,810.80 : x
  2. Step 2: Convert to fraction form
    20,676.72/31,008.60 = 10,810.80/x
  3. Step 3: Cross multiply
    20,676.72x = 31,008.60 × 10,810.80
  4. Step 4: Simplify right side
    20,676.72x = 335,227,772.88
  5. Step 5: Solve for x
    x = 335,227,772.88/20,676.72
  6. Step 6: Final answer
    x = 16,212.81

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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.