Home / 13,615.50-20,423.26-4,255.56

Finding the Fourth Proportional to 13,615.50, 20,423.26 and 4,255.56

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Solution

The fourth proportional to 13,615.50, 20,423.26 and 4,255.56 is: 6,383.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.50 : 20,423.26 = 4,255.56 : x
  2. Step 2: Convert to fraction form
    13,615.50/20,423.26 = 4,255.56/x
  3. Step 3: Cross multiply
    13,615.50x = 20,423.26 × 4,255.56
  4. Step 4: Simplify right side
    13,615.50x = 86,912,459.12
  5. Step 5: Solve for x
    x = 86,912,459.12/13,615.50
  6. Step 6: Final answer
    x = 6,383.35

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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.