Home / 20,134.80-30,146.67-15,189.48

Finding the Fourth Proportional to 20,134.80, 30,146.67 and 15,189.48

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Solution

The fourth proportional to 20,134.80, 30,146.67 and 15,189.48 is: 22,742.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.80 : 30,146.67 = 15,189.48 : x
  2. Step 2: Convert to fraction form
    20,134.80/30,146.67 = 15,189.48/x
  3. Step 3: Cross multiply
    20,134.80x = 30,146.67 × 15,189.48
  4. Step 4: Simplify right side
    20,134.80x = 457,912,241.03
  5. Step 5: Solve for x
    x = 457,912,241.03/20,134.80
  6. Step 6: Final answer
    x = 22,742.33

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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.