Home / 13,412.28-20,124.89-5,520.61

Finding the Fourth Proportional to 13,412.28, 20,124.89 and 5,520.61

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Solution

The fourth proportional to 13,412.28, 20,124.89 and 5,520.61 is: 8,283.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,412.28 : 20,124.89 = 5,520.61 : x
  2. Step 2: Convert to fraction form
    13,412.28/20,124.89 = 5,520.61/x
  3. Step 3: Cross multiply
    13,412.28x = 20,124.89 × 5,520.61
  4. Step 4: Simplify right side
    13,412.28x = 111,101,668.98
  5. Step 5: Solve for x
    x = 111,101,668.98/13,412.28
  6. Step 6: Final answer
    x = 8,283.58

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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.