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Finding the Fourth Proportional to 20,243.88, 30,369.84 and 7,096.68

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Solution

The fourth proportional to 20,243.88, 30,369.84 and 7,096.68 is: 10,646.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,243.88 : 30,369.84 = 7,096.68 : x
  2. Step 2: Convert to fraction form
    20,243.88/30,369.84 = 7,096.68/x
  3. Step 3: Cross multiply
    20,243.88x = 30,369.84 × 7,096.68
  4. Step 4: Simplify right side
    20,243.88x = 215,525,036.13
  5. Step 5: Solve for x
    x = 215,525,036.13/20,243.88
  6. Step 6: Final answer
    x = 10,646.43

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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.