Home / 13,988.20-20,982.35-5,668.37

Finding the Fourth Proportional to 13,988.20, 20,982.35 and 5,668.37

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Solution

The fourth proportional to 13,988.20, 20,982.35 and 5,668.37 is: 8,502.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.20 : 20,982.35 = 5,668.37 : x
  2. Step 2: Convert to fraction form
    13,988.20/20,982.35 = 5,668.37/x
  3. Step 3: Cross multiply
    13,988.20x = 20,982.35 × 5,668.37
  4. Step 4: Simplify right side
    13,988.20x = 118,935,694.93
  5. Step 5: Solve for x
    x = 118,935,694.93/13,988.20
  6. Step 6: Final answer
    x = 8,502.58

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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.