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Finding the Fourth Proportional to 20,168.56, 30,252.90 and 7,017.79

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Solution

The fourth proportional to 20,168.56, 30,252.90 and 7,017.79 is: 10,526.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.56 : 30,252.90 = 7,017.79 : x
  2. Step 2: Convert to fraction form
    20,168.56/30,252.90 = 7,017.79/x
  3. Step 3: Cross multiply
    20,168.56x = 30,252.90 × 7,017.79
  4. Step 4: Simplify right side
    20,168.56x = 212,308,499.09
  5. Step 5: Solve for x
    x = 212,308,499.09/20,168.56
  6. Step 6: Final answer
    x = 10,526.71

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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.