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Finding the Fourth Proportional to 35,358.67, 48,789.87 and 20,814.21

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Solution

The fourth proportional to 35,358.67, 48,789.87 and 20,814.21 is: 28,720.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,358.67 : 48,789.87 = 20,814.21 : x
  2. Step 2: Convert to fraction form
    35,358.67/48,789.87 = 20,814.21/x
  3. Step 3: Cross multiply
    35,358.67x = 48,789.87 × 20,814.21
  4. Step 4: Simplify right side
    35,358.67x = 1,015,522,600.05
  5. Step 5: Solve for x
    x = 1,015,522,600.05/35,358.67
  6. Step 6: Final answer
    x = 28,720.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.