Home / 20,731.33-31,091.50-8,250.85

Finding the Fourth Proportional to 20,731.33, 31,091.50 and 8,250.85

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Solution

The fourth proportional to 20,731.33, 31,091.50 and 8,250.85 is: 12,374.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731.33 : 31,091.50 = 8,250.85 : x
  2. Step 2: Convert to fraction form
    20,731.33/31,091.50 = 8,250.85/x
  3. Step 3: Cross multiply
    20,731.33x = 31,091.50 × 8,250.85
  4. Step 4: Simplify right side
    20,731.33x = 256,531,302.78
  5. Step 5: Solve for x
    x = 256,531,302.78/20,731.33
  6. Step 6: Final answer
    x = 12,374.09

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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.