Home / 20,613.24-30,902.55-14,354.78

Finding the Fourth Proportional to 20,613.24, 30,902.55 and 14,354.78

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Solution

The fourth proportional to 20,613.24, 30,902.55 and 14,354.78 is: 21,520.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,613.24 : 30,902.55 = 14,354.78 : x
  2. Step 2: Convert to fraction form
    20,613.24/30,902.55 = 14,354.78/x
  3. Step 3: Cross multiply
    20,613.24x = 30,902.55 × 14,354.78
  4. Step 4: Simplify right side
    20,613.24x = 443,599,098.35
  5. Step 5: Solve for x
    x = 443,599,098.35/20,613.24
  6. Step 6: Final answer
    x = 21,520.11

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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.