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Finding the Fourth Proportional to 22,913.21, 34,358.94 and 8,879.78

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Solution

The fourth proportional to 22,913.21, 34,358.94 and 8,879.78 is: 13,315.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,913.21 : 34,358.94 = 8,879.78 : x
  2. Step 2: Convert to fraction form
    22,913.21/34,358.94 = 8,879.78/x
  3. Step 3: Cross multiply
    22,913.21x = 34,358.94 × 8,879.78
  4. Step 4: Simplify right side
    22,913.21x = 305,099,656.44
  5. Step 5: Solve for x
    x = 305,099,656.44/22,913.21
  6. Step 6: Final answer
    x = 13,315.45

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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.