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Finding the Fourth Proportional to 30,639.58, 45,959.41 and 9,579.73

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Solution

The fourth proportional to 30,639.58, 45,959.41 and 9,579.73 is: 14,369.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,639.58 : 45,959.41 = 9,579.73 : x
  2. Step 2: Convert to fraction form
    30,639.58/45,959.41 = 9,579.73/x
  3. Step 3: Cross multiply
    30,639.58x = 45,959.41 × 9,579.73
  4. Step 4: Simplify right side
    30,639.58x = 440,278,858.43
  5. Step 5: Solve for x
    x = 440,278,858.43/30,639.58
  6. Step 6: Final answer
    x = 14,369.61

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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.