Home / 13,633.25-20,449.90-4,145.65

Finding the Fourth Proportional to 13,633.25, 20,449.90 and 4,145.65

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Solution

The fourth proportional to 13,633.25, 20,449.90 and 4,145.65 is: 6,218.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,633.25 : 20,449.90 = 4,145.65 : x
  2. Step 2: Convert to fraction form
    13,633.25/20,449.90 = 4,145.65/x
  3. Step 3: Cross multiply
    13,633.25x = 20,449.90 × 4,145.65
  4. Step 4: Simplify right side
    13,633.25x = 84,778,127.94
  5. Step 5: Solve for x
    x = 84,778,127.94/13,633.25
  6. Step 6: Final answer
    x = 6,218.48

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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.