Home / 20,215.84-30,313.20-6,361.12

Finding the Fourth Proportional to 20,215.84, 30,313.20 and 6,361.12

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Solution

The fourth proportional to 20,215.84, 30,313.20 and 6,361.12 is: 9,538.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.84 : 30,313.20 = 6,361.12 : x
  2. Step 2: Convert to fraction form
    20,215.84/30,313.20 = 6,361.12/x
  3. Step 3: Cross multiply
    20,215.84x = 30,313.20 × 6,361.12
  4. Step 4: Simplify right side
    20,215.84x = 192,825,902.78
  5. Step 5: Solve for x
    x = 192,825,902.78/20,215.84
  6. Step 6: Final answer
    x = 9,538.36

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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.