Home / 39,135.75-58,676.26-12,472.80

Finding the Fourth Proportional to 39,135.75, 58,676.26 and 12,472.80

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Solution

The fourth proportional to 39,135.75, 58,676.26 and 12,472.80 is: 18,700.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,135.75 : 58,676.26 = 12,472.80 : x
  2. Step 2: Convert to fraction form
    39,135.75/58,676.26 = 12,472.80/x
  3. Step 3: Cross multiply
    39,135.75x = 58,676.26 × 12,472.80
  4. Step 4: Simplify right side
    39,135.75x = 731,857,255.73
  5. Step 5: Solve for x
    x = 731,857,255.73/39,135.75
  6. Step 6: Final answer
    x = 18,700.48

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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.