Home / 20,464.92-30,704.64-11,707.20

Finding the Fourth Proportional to 20,464.92, 30,704.64 and 11,707.20

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Solution

The fourth proportional to 20,464.92, 30,704.64 and 11,707.20 is: 17,564.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,464.92 : 30,704.64 = 11,707.20 : x
  2. Step 2: Convert to fraction form
    20,464.92/30,704.64 = 11,707.20/x
  3. Step 3: Cross multiply
    20,464.92x = 30,704.64 × 11,707.20
  4. Step 4: Simplify right side
    20,464.92x = 359,465,361.41
  5. Step 5: Solve for x
    x = 359,465,361.41/20,464.92
  6. Step 6: Final answer
    x = 17,564.95

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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.