Home / 30,221.60-45,286.20-20,324.24

Finding the Fourth Proportional to 30,221.60, 45,286.20 and 20,324.24

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Solution

The fourth proportional to 30,221.60, 45,286.20 and 20,324.24 is: 30,455.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,221.60 : 45,286.20 = 20,324.24 : x
  2. Step 2: Convert to fraction form
    30,221.60/45,286.20 = 20,324.24/x
  3. Step 3: Cross multiply
    30,221.60x = 45,286.20 × 20,324.24
  4. Step 4: Simplify right side
    30,221.60x = 920,407,597.49
  5. Step 5: Solve for x
    x = 920,407,597.49/30,221.60
  6. Step 6: Final answer
    x = 30,455.29

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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.