Home / 20,613.85-30,899.31-15,673.12

Finding the Fourth Proportional to 20,613.85, 30,899.31 and 15,673.12

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Solution

The fourth proportional to 20,613.85, 30,899.31 and 15,673.12 is: 23,493.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,613.85 : 30,899.31 = 15,673.12 : x
  2. Step 2: Convert to fraction form
    20,613.85/30,899.31 = 15,673.12/x
  3. Step 3: Cross multiply
    20,613.85x = 30,899.31 × 15,673.12
  4. Step 4: Simplify right side
    20,613.85x = 484,288,593.55
  5. Step 5: Solve for x
    x = 484,288,593.55/20,613.85
  6. Step 6: Final answer
    x = 23,493.36

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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.