Home / 19,121.60-28,683.66-5,081.42

Finding the Fourth Proportional to 19,121.60, 28,683.66 and 5,081.42

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Solution

The fourth proportional to 19,121.60, 28,683.66 and 5,081.42 is: 7,622.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,121.60 : 28,683.66 = 5,081.42 : x
  2. Step 2: Convert to fraction form
    19,121.60/28,683.66 = 5,081.42/x
  3. Step 3: Cross multiply
    19,121.60x = 28,683.66 × 5,081.42
  4. Step 4: Simplify right side
    19,121.60x = 145,753,723.60
  5. Step 5: Solve for x
    x = 145,753,723.60/19,121.60
  6. Step 6: Final answer
    x = 7,622.46

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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.