Home / 13,819.39-20,728.98-3,958.69

Finding the Fourth Proportional to 13,819.39, 20,728.98 and 3,958.69

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Solution

The fourth proportional to 13,819.39, 20,728.98 and 3,958.69 is: 5,938.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.39 : 20,728.98 = 3,958.69 : x
  2. Step 2: Convert to fraction form
    13,819.39/20,728.98 = 3,958.69/x
  3. Step 3: Cross multiply
    13,819.39x = 20,728.98 × 3,958.69
  4. Step 4: Simplify right side
    13,819.39x = 82,059,605.84
  5. Step 5: Solve for x
    x = 82,059,605.84/13,819.39
  6. Step 6: Final answer
    x = 5,938.00

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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.