Home / 13,639.32-20,462.90-11,288.43

Finding the Fourth Proportional to 13,639.32, 20,462.90 and 11,288.43

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Solution

The fourth proportional to 13,639.32, 20,462.90 and 11,288.43 is: 16,935.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.32 : 20,462.90 = 11,288.43 : x
  2. Step 2: Convert to fraction form
    13,639.32/20,462.90 = 11,288.43/x
  3. Step 3: Cross multiply
    13,639.32x = 20,462.90 × 11,288.43
  4. Step 4: Simplify right side
    13,639.32x = 230,993,957.80
  5. Step 5: Solve for x
    x = 230,993,957.80/13,639.32
  6. Step 6: Final answer
    x = 16,935.89

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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.