Home / 13,711.42-20,558.49-11,632.15

Finding the Fourth Proportional to 13,711.42, 20,558.49 and 11,632.15

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Solution

The fourth proportional to 13,711.42, 20,558.49 and 11,632.15 is: 17,440.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,711.42 : 20,558.49 = 11,632.15 : x
  2. Step 2: Convert to fraction form
    13,711.42/20,558.49 = 11,632.15/x
  3. Step 3: Cross multiply
    13,711.42x = 20,558.49 × 11,632.15
  4. Step 4: Simplify right side
    13,711.42x = 239,139,439.45
  5. Step 5: Solve for x
    x = 239,139,439.45/13,711.42
  6. Step 6: Final answer
    x = 17,440.90

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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.