Home / 18,911.80-28,367.79-5,764.33

Finding the Fourth Proportional to 18,911.80, 28,367.79 and 5,764.33

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Solution

The fourth proportional to 18,911.80, 28,367.79 and 5,764.33 is: 8,646.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,911.80 : 28,367.79 = 5,764.33 : x
  2. Step 2: Convert to fraction form
    18,911.80/28,367.79 = 5,764.33/x
  3. Step 3: Cross multiply
    18,911.80x = 28,367.79 × 5,764.33
  4. Step 4: Simplify right side
    18,911.80x = 163,521,302.93
  5. Step 5: Solve for x
    x = 163,521,302.93/18,911.80
  6. Step 6: Final answer
    x = 8,646.52

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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.