Home / 13,825.90-20,738.85-3,437.65

Finding the Fourth Proportional to 13,825.90, 20,738.85 and 3,437.65

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Solution

The fourth proportional to 13,825.90, 20,738.85 and 3,437.65 is: 5,156.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,825.90 : 20,738.85 = 3,437.65 : x
  2. Step 2: Convert to fraction form
    13,825.90/20,738.85 = 3,437.65/x
  3. Step 3: Cross multiply
    13,825.90x = 20,738.85 × 3,437.65
  4. Step 4: Simplify right side
    13,825.90x = 71,292,920.73
  5. Step 5: Solve for x
    x = 71,292,920.73/13,825.90
  6. Step 6: Final answer
    x = 5,156.48

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Similar ratio
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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.