Home / 18,742.31-28,118.39-6,735.68

Finding the Fourth Proportional to 18,742.31, 28,118.39 and 6,735.68

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Solution

The fourth proportional to 18,742.31, 28,118.39 and 6,735.68 is: 10,105.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.31 : 28,118.39 = 6,735.68 : x
  2. Step 2: Convert to fraction form
    18,742.31/28,118.39 = 6,735.68/x
  3. Step 3: Cross multiply
    18,742.31x = 28,118.39 × 6,735.68
  4. Step 4: Simplify right side
    18,742.31x = 189,396,366.03
  5. Step 5: Solve for x
    x = 189,396,366.03/18,742.31
  6. Step 6: Final answer
    x = 10,105.28

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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.