Home / 13,231.68-19,847.52-3,998.40

Finding the Fourth Proportional to 13,231.68, 19,847.52 and 3,998.40

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Solution

The fourth proportional to 13,231.68, 19,847.52 and 3,998.40 is: 5,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,231.68 : 19,847.52 = 3,998.40 : x
  2. Step 2: Convert to fraction form
    13,231.68/19,847.52 = 3,998.40/x
  3. Step 3: Cross multiply
    13,231.68x = 19,847.52 × 3,998.40
  4. Step 4: Simplify right side
    13,231.68x = 79,358,323.97
  5. Step 5: Solve for x
    x = 79,358,323.97/13,231.68
  6. Step 6: Final answer
    x = 5,997.60

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Similar ratio
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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.