Home / 30,147.28-45,221.30-11,422.28

Finding the Fourth Proportional to 30,147.28, 45,221.30 and 11,422.28

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Solution

The fourth proportional to 30,147.28, 45,221.30 and 11,422.28 is: 17,133.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,147.28 : 45,221.30 = 11,422.28 : x
  2. Step 2: Convert to fraction form
    30,147.28/45,221.30 = 11,422.28/x
  3. Step 3: Cross multiply
    30,147.28x = 45,221.30 × 11,422.28
  4. Step 4: Simplify right side
    30,147.28x = 516,530,380.03
  5. Step 5: Solve for x
    x = 516,530,380.03/30,147.28
  6. Step 6: Final answer
    x = 17,133.57

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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.