Home / 13,590.80-20,385.28-3,729.25

Finding the Fourth Proportional to 13,590.80, 20,385.28 and 3,729.25

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Solution

The fourth proportional to 13,590.80, 20,385.28 and 3,729.25 is: 5,593.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.80 : 20,385.28 = 3,729.25 : x
  2. Step 2: Convert to fraction form
    13,590.80/20,385.28 = 3,729.25/x
  3. Step 3: Cross multiply
    13,590.80x = 20,385.28 × 3,729.25
  4. Step 4: Simplify right side
    13,590.80x = 76,021,805.44
  5. Step 5: Solve for x
    x = 76,021,805.44/13,590.80
  6. Step 6: Final answer
    x = 5,593.62

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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.