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Finding the Fourth Proportional to 20,234.85, 30,355.02 and 19,004.64

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Solution

The fourth proportional to 20,234.85, 30,355.02 and 19,004.64 is: 28,509.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,234.85 : 30,355.02 = 19,004.64 : x
  2. Step 2: Convert to fraction form
    20,234.85/30,355.02 = 19,004.64/x
  3. Step 3: Cross multiply
    20,234.85x = 30,355.02 × 19,004.64
  4. Step 4: Simplify right side
    20,234.85x = 576,886,227.29
  5. Step 5: Solve for x
    x = 576,886,227.29/20,234.85
  6. Step 6: Final answer
    x = 28,509.54

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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.