Home / 18,778.43-28,171.29-5,629.70

Finding the Fourth Proportional to 18,778.43, 28,171.29 and 5,629.70

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Solution

The fourth proportional to 18,778.43, 28,171.29 and 5,629.70 is: 8,445.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,778.43 : 28,171.29 = 5,629.70 : x
  2. Step 2: Convert to fraction form
    18,778.43/28,171.29 = 5,629.70/x
  3. Step 3: Cross multiply
    18,778.43x = 28,171.29 × 5,629.70
  4. Step 4: Simplify right side
    18,778.43x = 158,595,770.46
  5. Step 5: Solve for x
    x = 158,595,770.46/18,778.43
  6. Step 6: Final answer
    x = 8,445.64

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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.