Home / 13,982.10-20,973.60-5,217.90

Finding the Fourth Proportional to 13,982.10, 20,973.60 and 5,217.90

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Solution

The fourth proportional to 13,982.10, 20,973.60 and 5,217.90 is: 7,827.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,982.10 : 20,973.60 = 5,217.90 : x
  2. Step 2: Convert to fraction form
    13,982.10/20,973.60 = 5,217.90/x
  3. Step 3: Cross multiply
    13,982.10x = 20,973.60 × 5,217.90
  4. Step 4: Simplify right side
    13,982.10x = 109,438,147.44
  5. Step 5: Solve for x
    x = 109,438,147.44/13,982.10
  6. Step 6: Final answer
    x = 7,827.02

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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.