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Finding the Fourth Proportional to 20,040.71, 30,066.18 and 11,727.71

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Solution

The fourth proportional to 20,040.71, 30,066.18 and 11,727.71 is: 17,594.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,040.71 : 30,066.18 = 11,727.71 : x
  2. Step 2: Convert to fraction form
    20,040.71/30,066.18 = 11,727.71/x
  3. Step 3: Cross multiply
    20,040.71x = 30,066.18 × 11,727.71
  4. Step 4: Simplify right side
    20,040.71x = 352,607,439.85
  5. Step 5: Solve for x
    x = 352,607,439.85/20,040.71
  6. Step 6: Final answer
    x = 17,594.56

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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.