Home / 29,138.20-43,739.70-18,057.40

Finding the Fourth Proportional to 29,138.20, 43,739.70 and 18,057.40

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Solution

The fourth proportional to 29,138.20, 43,739.70 and 18,057.40 is: 27,106.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,138.20 : 43,739.70 = 18,057.40 : x
  2. Step 2: Convert to fraction form
    29,138.20/43,739.70 = 18,057.40/x
  3. Step 3: Cross multiply
    29,138.20x = 43,739.70 × 18,057.40
  4. Step 4: Simplify right side
    29,138.20x = 789,825,258.78
  5. Step 5: Solve for x
    x = 789,825,258.78/29,138.20
  6. Step 6: Final answer
    x = 27,106.18

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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.