Home / 20,221.63-30,336.77-7,074.43

Finding the Fourth Proportional to 20,221.63, 30,336.77 and 7,074.43

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Solution

The fourth proportional to 20,221.63, 30,336.77 and 7,074.43 is: 10,613.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.63 : 30,336.77 = 7,074.43 : x
  2. Step 2: Convert to fraction form
    20,221.63/30,336.77 = 7,074.43/x
  3. Step 3: Cross multiply
    20,221.63x = 30,336.77 × 7,074.43
  4. Step 4: Simplify right side
    20,221.63x = 214,615,320.42
  5. Step 5: Solve for x
    x = 214,615,320.42/20,221.63
  6. Step 6: Final answer
    x = 10,613.16

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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.