Home / 13,449.82-20,166.53-5,120.94

Finding the Fourth Proportional to 13,449.82, 20,166.53 and 5,120.94

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Solution

The fourth proportional to 13,449.82, 20,166.53 and 5,120.94 is: 7,678.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,449.82 : 20,166.53 = 5,120.94 : x
  2. Step 2: Convert to fraction form
    13,449.82/20,166.53 = 5,120.94/x
  3. Step 3: Cross multiply
    13,449.82x = 20,166.53 × 5,120.94
  4. Step 4: Simplify right side
    13,449.82x = 103,271,605.27
  5. Step 5: Solve for x
    x = 103,271,605.27/13,449.82
  6. Step 6: Final answer
    x = 7,678.29

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1.5x scale

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.