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Finding the Fourth Proportional to 20,043.64, 30,065.66 and 8,950.89

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Solution

The fourth proportional to 20,043.64, 30,065.66 and 8,950.89 is: 13,426.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,043.64 : 30,065.66 = 8,950.89 : x
  2. Step 2: Convert to fraction form
    20,043.64/30,065.66 = 8,950.89/x
  3. Step 3: Cross multiply
    20,043.64x = 30,065.66 × 8,950.89
  4. Step 4: Simplify right side
    20,043.64x = 269,114,370.68
  5. Step 5: Solve for x
    x = 269,114,370.68/20,043.64
  6. Step 6: Final answer
    x = 13,426.43

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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.