Home / 20,266.20-30,399.30-11,518.20

Finding the Fourth Proportional to 20,266.20, 30,399.30 and 11,518.20

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Solution

The fourth proportional to 20,266.20, 30,399.30 and 11,518.20 is: 17,277.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,266.20 : 30,399.30 = 11,518.20 : x
  2. Step 2: Convert to fraction form
    20,266.20/30,399.30 = 11,518.20/x
  3. Step 3: Cross multiply
    20,266.20x = 30,399.30 × 11,518.20
  4. Step 4: Simplify right side
    20,266.20x = 350,145,217.26
  5. Step 5: Solve for x
    x = 350,145,217.26/20,266.20
  6. Step 6: Final answer
    x = 17,277.30

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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.