Home / 13,693.79-20,540.67-3,305.54

Finding the Fourth Proportional to 13,693.79, 20,540.67 and 3,305.54

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Solution

The fourth proportional to 13,693.79, 20,540.67 and 3,305.54 is: 4,958.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,693.79 : 20,540.67 = 3,305.54 : x
  2. Step 2: Convert to fraction form
    13,693.79/20,540.67 = 3,305.54/x
  3. Step 3: Cross multiply
    13,693.79x = 20,540.67 × 3,305.54
  4. Step 4: Simplify right side
    13,693.79x = 67,897,903.61
  5. Step 5: Solve for x
    x = 67,897,903.61/13,693.79
  6. Step 6: Final answer
    x = 4,958.30

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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.