Home / 13,447.28-20,164.37-4,085.70

Finding the Fourth Proportional to 13,447.28, 20,164.37 and 4,085.70

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Solution

The fourth proportional to 13,447.28, 20,164.37 and 4,085.70 is: 6,126.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.28 : 20,164.37 = 4,085.70 : x
  2. Step 2: Convert to fraction form
    13,447.28/20,164.37 = 4,085.70/x
  3. Step 3: Cross multiply
    13,447.28x = 20,164.37 × 4,085.70
  4. Step 4: Simplify right side
    13,447.28x = 82,385,546.08
  5. Step 5: Solve for x
    x = 82,385,546.08/13,447.28
  6. Step 6: Final answer
    x = 6,126.56

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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.