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Finding the Fourth Proportional to 20,326.68, 30,489.66 and 8,014.68

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Solution

The fourth proportional to 20,326.68, 30,489.66 and 8,014.68 is: 12,021.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,326.68 : 30,489.66 = 8,014.68 : x
  2. Step 2: Convert to fraction form
    20,326.68/30,489.66 = 8,014.68/x
  3. Step 3: Cross multiply
    20,326.68x = 30,489.66 × 8,014.68
  4. Step 4: Simplify right side
    20,326.68x = 244,364,868.21
  5. Step 5: Solve for x
    x = 244,364,868.21/20,326.68
  6. Step 6: Final answer
    x = 12,021.88

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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.