Home / 28,000.85-41,986.70-13,205.80

Finding the Fourth Proportional to 28,000.85, 41,986.70 and 13,205.80

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Solution

The fourth proportional to 28,000.85, 41,986.70 and 13,205.80 is: 19,801.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,000.85 : 41,986.70 = 13,205.80 : x
  2. Step 2: Convert to fraction form
    28,000.85/41,986.70 = 13,205.80/x
  3. Step 3: Cross multiply
    28,000.85x = 41,986.70 × 13,205.80
  4. Step 4: Simplify right side
    28,000.85x = 554,467,791.86
  5. Step 5: Solve for x
    x = 554,467,791.86/28,000.85
  6. Step 6: Final answer
    x = 19,801.82

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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.