Home / 13,615.39-20,425.91-4,255.03

Finding the Fourth Proportional to 13,615.39, 20,425.91 and 4,255.03

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Solution

The fourth proportional to 13,615.39, 20,425.91 and 4,255.03 is: 6,383.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.39 : 20,425.91 = 4,255.03 : x
  2. Step 2: Convert to fraction form
    13,615.39/20,425.91 = 4,255.03/x
  3. Step 3: Cross multiply
    13,615.39x = 20,425.91 × 4,255.03
  4. Step 4: Simplify right side
    13,615.39x = 86,912,859.83
  5. Step 5: Solve for x
    x = 86,912,859.83/13,615.39
  6. Step 6: Final answer
    x = 6,383.43

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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.